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C.L Davis Foundation for Advancement of Veterinary and Comparative Pathology
C.N.C.A. Coordinamento Nazionale Comunità di Accoglienza
CAAS, The Center for Alcohol and Addiction Studies
CABI International Mycological Institute (UK)
Cabinetul de Consiliere a Femeilor cu Sarcina Nedorita
Cactus and Succulent Society of America
Cactus and Succulent Society of New Zealand
CAD/CAM Society
Cag University
Cairo Heart Surgery Society
Cairo University
Caja de Previsión Social para Bioquímicos de la Pciade Bs.As.
CALAS / ASCAL - Canadian Association for Laboratory Animal Science
Calaveras Wine Association
Calcutta Statistical Association
Calgary Medical Legal Society
California Academy of Family Physicians
California Academy of General Dentistry
California Academy of Ophthalmology
California Aquaculture Association
California Association for Medical Laboratoy Technology 
California Association Medical Staff Services
California Association of Acupuncture and Oriental Medicine
California Association of Marriage and Family Therapists [CAMFT]
California Association of Neurological Surgeons
California Association of Nurse Anesthetists
California Association of Nurserymen
California Association of Ophthalmology
California Association of Oral & Maxillofacial Surgeons
California Association of Orthodontists
California Associaton of Acupuncture and Oriental Medicine - CAAOM
California Biodiversity Council
California Blood Bank Society [CBBS]
California Board of Podiatric Medicine
California Certified Organic Farmers
California Chapter American College of Emergency Physicians
California Chapter American Physical Therapy Association
California Chapter of American College Cardiology
California Chapter of American Psychiatric Nurses Association
California Coalition of Nurse Practitioners
California Dairy Research Foundation
California Dental Association
California Dental Laboratory Association
California Department of Industrial Relations Industrial Medical Council
California Department of Pesticide Regulation
California DHS: Maternal and Child Health Branch (US)
California Diabetes Control Program
California Emergency Physicians
California Healthcare Association
California Lichen Society
California Medical Association
California Native Plant Society
California Nurse-Midwives Association
California Nurses Association 
California Nursing Students' Association
California Orthopaedic Association
California Pharmacists Association (CPhA)
California Podiatric Medical Association
California Poultry Federation
California Primary Care Association
California Psychiatric Association
California Public Health Association
California Radiological Society
California Regional Primate Research Center, UC Davis
California Society for Cardiac Rehabilitation
California Society for Respiratory Care
California Society of Anesthesiologists
California society of health system pharmacist
California Society of Pathologists
California Society of Pediatric Dentists
California Society of Periodontists
California Society of Plastic Surgeons
California State Association of Occupational Health Nurses
California TB Controllers Association
California Tuberculosis Controllers Association
California Urological Association
CaliforniaDental Association
Californian Society of Anesthesiologists
Calorie Control Council
Cámara Argentina de Laboratorios de Análisis Bioquímicos
Camara Minera de Venezuela
Cambodian Red Cross
Campaign Against Foreign Control of Aotearoa (NZ)
Campaign for Tobacco Free Kids (USA)
Campion College
Campus Bio-Medico University of Rome
Canada Agriculture Museum
Canada Institute for Scientific and Technical Information, CISTI
Canada:  Canadian Hemophilia Society 
Canada´s Health Informatics Association
Canada´s Research-Based Pharmaceutical Companies (R&D)
Canada's Forest Network
Canada's Medical Device Technology Companies [MEDEC]
Canada's National Research Council
Canada's Research-based Pharmaceutical Companies [formerly PIMAC]
Canadian Academy of Endodontics
Canadian Academy of Geriatric Psychiatry
Canadian Academy of Manipulative Therapy (CAMT)
Canadian Academy of Periodontology
Canadian Academy of Psychiatry and Law
Canadian Academy of Restorative Dentistry and Prosthodontics
Canadian Academy of Sport Medicine
Canadian Acoustical Association
Canadian Agricultural Economics Society
Canadian Anesthesiologists' Society
Canadian Anesthesiologists' Society
Canadian Animal Health Institute
Canadian Applied and Industrial Mathematics Society (CAIMS) (en, fr)
Canadian Archaeological Association
Canadian Arthritis Network
Canadian Arthritis Patient Alliance
Canadian Arthritis Society
Canadian Assocation of Radiologists Online
Canadian Association for Clinical Microbiology & Infectious Diseases
Canadian Association for Health
Canadian Association for Neuroscience
Canadian Association for Physical Anthropology
Canadian Association for Population Therapeutics
Canadian Association for Study of Liver
Canadian Association of Anatomy
Canadian Association of Applied Linguistics
Canadian Association of Cardiac Rehabilitation
Canadian Association of Child Neurology Corporation, CA
Canadian Association of Critical Care Nurses
Canadian Association of Emergency Physicians Association Canadienne de Médecins d'Urgences
Canadian Association of Gastroenterology (CAG)
Canadian Association of General Surgeons
Canadian Association of Genetic Counsellors (CAGC)
Canadian Association of Interns & Residents
Canadian Association of Interventional Cardiology
Canadian Association of Medical Oncologists
Canadian Association of Medical Physicists
Canadian Association of Medical Radiation Technologists
Canadian Association of Neuropathologists
Canadian Association of Neuroscience Nurses, CA
Canadian Association of Nurses in Independent Practice - CANIP
Canadian Association of Nurses in Oncology
Canadian Association of Occupational Therapists
Canadian Association of Optometrists (CAO)
Canadian Association of Oral and Maxillofacial Surgeons
Canadian Association of Orthodontists
Canadian Association of Orthopaedic Medicine
Canadian Association of Paediatric Surgeons (CAPS)
Canadian Association of Palynologists
Canadian Association of Pathologists / Assocation canadienne des pathologistes
Canadian Association of Pharmacy and Oncology
Canadian Association of Pharmacy Students (CAPSI)
Canadian Association of Physical Medicine and Rehabilitation
Canadian Association of Physicians for Environment
Canadian Association of Physicists (CAP)
Canadian Association of Psychosocial Oncology
Canadian Association of Radiation Oncologists (CARO)
Canadian Association of Radiologists
Canadian Association of Research Libraries
Canadian Association of Speech-Language Pathologists and Audiologists
Canadian Association of Transplantation
Canadian Association of University Teachers
Canadian Association of Vetinary Ophthalmology (CAVO).
Canadian Astronomical Society (CASCA) (en, fr)
Canadian Biodiversity Information Network
Canadian Bioethics Society
Canadian Botanical Association - L'Association Botanique du Canada
Canadian Botanical Conservation Network
Canadian Cancer Society/Société canadienne du cancer
Canadian Cardiovascular Society
Canadian Cattlemen's Association
Canadian Centre for Emergency Preparedness
Canadian Centre for Occupational Health and Safety
Canadian Centre on Substance Abuse
Canadian Centre on Substance Abuse
Canadian Centres for Health Evidence
Canadian Charolais Association
Canadian Chiropractic Association
Canadian Chiropractic Examining Board
Canadian Collaborative Group for Cancer Genetics (CCGCG)
Canadian College of Business & Computers
Canadian College of Health Services Executives [CCHSE]
Canadian College of Medical Geneticists
Canadian Committee on Antibiotic Resistance
Canadian Conservation Institute
Canadian Coordinating Office for Health Technology Assessment [CCOHTA]
Canadian Council of Professional Fish Harvesters
Canadian Council on Health Services Accreditation
Canadian Council on Smoking and Health (CCSH)
Canadian Critical Care Society
Canadian Cystic Fibrosis Foundation
Canadian Dairy Network
Canadian Dehydrators Association (alfalfa)
Canadian Dental Assistants Association
Canadian Dental Association
Canadian Dental Hygienists Association / L'Association canadienne des hygiénistes dentaires
Canadian Dermatology Association / Association canadienne de dermatologie
Canadian Dexter Cattle Association
Canadian Diabetes Association
Canadian Directory of Genetic Support Groups
Canadian Donor's Guide
Canadian Drug Manufacturers Assocation[CDMA]
Canadian Embryo Exporters Association
Canadian Federation of Biological Societies (CFBS) / Féderation canadienne des sociétés de biologie (FCSB)
Canadian Federation of Humane Societies
Canadian Federation of Medical Students (CFMS)
Canadian Federation of Traditional Chinese Medicine And Acupuncture
Canadian Fertility and Andrology Society
Canadian Food Inspection Agency
Canadian Foundation for Drug Policy
Canadian Geophysical Union
Canadian Geotechnical Society
Canadian Health Care Anti-Fraud Association
Canadian Health Economics Research Association (CHERA) /
Canadian Health Libraries Association
Canadian Healthcare Association (CHA)
Canadian Hearing Society
Canadian Hemochromatosis Society
Canadian Hemophilia Society
Canadian Herb Society.
Canadian HIV/AIDS Legal Network
Canadian Hospital Infection Control Association
Canadian Hypertension Society
Canadian Infectious Disease Society
Canadian Institute for Health Information
Canadian Institute of Biotechnology
Canadian Institute of Child Health
Canadian Institute of Food Science & Technology
Canadian Institute of Forestry
Canadian Institute of Geomatics
Canadian Integrated Taxonomic Information System
Canadian Interventional Radiology Association
Canadian Intravenous Nurses Association
Canadian Killifish Association
Canadian Laser Aesthetic Surgery Society (CLASS)
Canadian Latex Allergy Association
Canadian Linguistic Association
Canadian Lung Association
Canadian Malignant Hyperthermia Association
Canadian Medical Acupuncture Society (Canada)
Canadian Medical Association
Canadian Medical Physics Organisations (COMP/CCPM)
Canadian Melanoma Foundation
Canadian Mental Health Association
Canadian Meteorological and Oceanographic Society
Canadian National Institute for Blind
Canadian National Wildlife Areas & Migratory Bird Sanctuaries
Canadian Nature Federation
Canadian Network of Toxicology Centres
Canadian Nuclear Society
Canadian Nurses Association
Canadian Office of Global Surveillance & Field Epidemiology
Canadian Oncology Societies
Canadian Operational Research Society
Canadian Ophthalmological Society (COS)
Canadian Organisation for Advancement of Computers in Health [COACH]
Canadian Orthopaedic Association
Canadian Orthopaedic Foundation
Canadian Orthopaedic Nurses Association
Canadian Paediatric Society
Canadian Pain Society
Canadian Paraplegic Association
Canadian Parks and Wilderness Society
Canadian Pediatric Cardiology Association
Canadian Perinatal Network
Canadian Perinatal Surveillance System
Canadian Pharmaceutical Association
Canadian Pharmacists Association
Canadian Physiological Society
Canadian Physiotherapy Association
Canadian Phytopathological Society
Canadian Pigeon Fanciers Association
Canadian Podiatric Medical Association
Canadian Psychiatric Association
Canadian Psychoanalytic Society
Canadian Psychological Association (CPA) (en, fr)
Canadian Public Health Association
Canadian Public Health Association (CPHA)
Canadian Red Cross 
Canadian Renewable Fuels Association
Canadian Rheumatology Association
Canadian Rift Lake Cichlid Association
Canadian Sleep Society
Canadian Sleep Society (CSS)
Canadian Society for Aesthetic Plastic Surgery
Canadian Society for Biomechanics
Canadian Society for Chemical Engineering
Canadian Society for Chemical Technology
Canadian Society for Chemistry (CSC) (en, fr)
Canadian Society for Epidemiology and Biostatistics
Canadian Society for History and Philosophy of Mathematics (CSHPM) (en)
Canadian Society for Hospital Pharmacists
Canadian Society for Immunology
Canadian Society for International Health
Canadian Society for Mass Spectrometry
Canadian Society for Medical Laboratory Science
Canadian Society for Nondestructive Testing
Canadian Society for Pharmaceutical Sciences (CSPS) / Société canadienne des sciences pharmaceutiques (SCSP)
Canadian Society for Theoretical Biology (CSTB) (en, fr)
Canadian Society for Vascular Surgery
Canadian Society of Addiction Medicine
Canadian Society of Addiction Professionals
Canadian Society of Agronomy
Canadian Society of Allergy and Clinical Immunology
Canadian Society of Animal Science
Canadian Society of Atherosclerosis
Canadian Society of Biochemistry and Molecular & Cellular Biology
Canadian Society of Cardiology Technologists
Canadian Society of Clinical Chemists 
Canadian Society of Clinical Perfusion
Canadian Society of Diagnostic Medical Sonographers
Canadian Society of Echocardiography
Canadian Society of Endocrinology and Metabolism
Canadian Society of Exercise Physiologists
Canadian Society of Exploration Geophysicists
Canadian Society of Forensic Science 
Canadian Society of Hospital Pharmacists (CSHP)
Canadian Society of Internal Medicine
Canadian Society of Laboratory Technologists (CSLT)
Canadian Society of Microbiologists
Canadian Society of Nephrology
Canadian Society of Orthopaedic Technologists
Canadian Society of Otolaringology-Head and Neck Surgery
Canadian Society of Petroleum Geologists
Canadian Society of Plant Physiologists
Canadian Society of Plastic Surgeons
Canadian Society of Respiratory Therapists
Canadian Society of Surgical Oncology
Canadian Society of Telehealth
Canadian Society of Transplantation / Société canadienne de transplantation
Canadian Society of Zoologists
Canadian Sociology and Anthropology Association
Canadian Strategy for Cancer Control
Canadian Thoracic Society
Canadian Thyroid Foundation
Canadian Urologic Oncology Group
Canadian Urological Association (CUA)
Canadian Veterinary Medical Association (CVMA)
Canadian Water Resources Association
Canadian Wholesale Drug Association (CWDA)
Canadian Wildlife Federation
Canadian Women's Health Network / Le Réseau canadien pour la santé des femmes
Canakkale (18th March) University
Canary Island Institute of Marine Sciences
Canberra Astronomical Society
Canberra Organic Growers Society
Cancer Association of South Africa (CANSA)
Cancer BACUP, UK
Cancer Care Ontario
Cancer Council Australia
Cancer Foundation of Western Australia
Cancer Nutrition Center
Cancer Patients Aid Association (CPAA)
Cancer Research and Prevention Foundation
Cancer Research Institute
Cancer Society of Finland
Cancer Society of New Zealand
Cancer.gov (National Cancer Institute)
Cankaya University
Cantacuzino Institute - infectious diseases prevention and control
Can-Tho University
CAP - College of American Pathologists
Capillary Electrophoresis Society of New England
Capital Area Round Table on Informatics in Nursing [CARING]
Capital Normal University
Capital University of Economics and Business
Capital University of Medical Sciences
Carbon Dioxide Information Analysis Center
Cardiac Arrhythmias Research and Education Foundation
Cardiac Electrophysiology Society
Cardiac Society of Australia and New Zealand (CSANZ)
Cardiff Clinical Dental Students' Society - University of Wales
Cardiff University
Cardinal Stefan Wyszynski University in Warsaw
Cardiological Society of India
Cardiological Society of India, Bangalore
Cardiology Technologists Association of Ontario
Cardiothoracic Section of Royal College of Medicine
Cardiovascular and Interventional Radiological Society of Europe (CIRSE)
Carenciados y Discapacitados
Caribbean Center for Advanced Studies
Caribbean Epidemiology Center CAREC
Caribbean Food and Nutrition Institute
Caribbean Health Research Council CHRC
Caribbean University
Carl E. Olsen's Marijuana Archive
Carl Hayden Bee Research Center
Carl Meyers Coral Reef Fish Research, Hawaii
Carl Stough Institute of Breathing Coordination, Inc.
Carl von Ossietzky Universität Oldenburg
Carleton University
Carlow Institute of Technology
Carolina Geological Society. 
Carribean College of Family Physicians
Cascadia Forest Alliance
Case Management Society of America
CAST - Council for Agricultural Science and Technology
Catalan Association for Clinical Laboratory Sciences 
Catawba County Medical Society Alliance
Catgut Acoustical Society
Catholic Doctors Association of Malaysia
Catholic Health Association of Canada
Catholic Health Association of United States
Catholic Health Association of Wisconsin
Catholic Health Australia
Catholic University of Eastern Africa
Catholic University of Korea
Catholic University of Lublin
Catholic University of Nijmegen
Catholic University of Taegu-Hyosung
Catholic University of the Sacred Heart
Catholic University of Tilburg
Catholique University of Bukavu
CAUZ - Consortium of Aquariums Universities & Zoos
CAVO - Canadian Association of Veterinary Ophthalmology
CBFT, Centre of Behavioural and Forensic Toxicology, University of Padova
CBRA - California Biomedical Research Association
CBSG - Conservation Breeding Specialist Group
CCAC - Canadian Council on Animal Care
CCI - Canine Companions for Independence
CDC Division of Bacterial & Mycotic Diseases
CDC Division of Parasitic Diseases
CDC Division of Viral & Rickettsial Diseases
CDC Divisions of HIV/AIDS Prevention
CDC National Center for Birth Defects and Developmental Disabilities
CDC National Center for Infectious Diseases 
CDC National Institute for Occupational Safety and Health
CDC National Prevention Information Network
CDC Office of Genetics and Disease Prevention, US
CDC Zoonotic Diseases 
Ce.I.S. Centro Italiano di Solidarietà
Cebu Society of General Surgeons
CEDROS, Red para Cooperación en Estudios y Desarrollo de Recursos Odontologicos
Celal Bayar University
Celiac Sprue Association
Cell Death Society, US
Cell Proliferation Society
CEN/TC European Standardization of Health Informatics
Centenary Institute, Australia
Centenary Survey of Nobel Laureates in Physiology or Medicine
Center For Advancement Of Blind In Israel
Center for Agricultural and Rural Development
Center for Agriculture in Environment
Center for Agroecology & Sustainable Food Systems, UC Santa Cruz
Center for AIDS Prevention Studies, Univof Cal, SF
Center for Alcohol & Addiction Studies, Brown Univ.
Center for Animal Alternatives, UCDavis
Center for Animal Behavior, UCDavis
Center For Applied Genomics, New Jersey
Center for Aquatic and Invasive Plants, Florida
Center for Aquatic and Invasive Plants, University of Florida
Center for Biodiversity & Conservation, AMNH
Center for Biodiversity & Indigenous Knowledge, China
Center for Biodiversity Studies, Western Kentucky Univ.
Center for Biodiversity, Univof Illinois
Center for Bioethics & Human Dignity
Center for Biological Control, College of Natural Resources
Center for Biological Diversity
Center for Biology of Natural Systems
Center for Biomedical Imaging Technology
Center for Biophysics & Computational Biology, Univof Illinois
Center for Biostatistics & Epidemiology, Penn State Univ.
Center for Bone Marrow Transplant and Cell Therapy, Rush Presbyterian-StLuke's Medical Center
Center for Bryological Information, New York
Center for Civilian Biodefense Studies, Johns Hopkins U.
Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania
Center for Cognitive Brain Imaging, Carnegie Mellon Univ.
Center for Cognitive Medicine, Univof Illinois
Center for Cognitive Science at Ohio State University
Center for Cognitive Science, University of Buffalo
Center for Cognitive Sciences, Univof Minnesota
Center for Cognitive Studies of Moving Image, Univof Central Arkansas
Center for Comparative Infectious Diseases, Univof Liverpool
Center for Complex Infectious Diseases
Center for Computational Biology, Montana State Univ.
Center for Conservation and Biodiversity, University of Connecticut
Center for Conservation Biology Network
Center for Conservation Biology, Rice University
Center for Cross Cultural Health
Center for Demography & Ecology, Univof Wisconsin
Center for Developmental Biology, Japan
Center for Disease Control/Cancer Prevention and Control Programs
Center for Documentation of Severe Skin Reactions University of Freiburg
Center for Ecological Research, Kyoto University, Japan
Center for Education and Drug Abuse Research
Center for Environmental Research & Conservation, Columbia University
Center for Exploration of Dinosaurian World
Center for Food Safety and Applied Nutrition - FDA
Center for Food Safety and Quality Enhancement, Univof Georgia
Center for Gender Research of European Humanities University (en)
Center for Gene Therapy, University of Iowa
Center for Health Care Strategies
Center for Health Design
Center for Health, Environment and Justice
Center for Healthcare Information Management
Center for Healthcare Strategies
Center for Hearing & Deafness, Univof Buffalo
Center for Holistic Pediatric Education and Research Children's Hospital, Boston
Center for Human Genome Studies, Los Alamos
Center for In Vivo Microscopy, Duke University
Center for Infectious Disease Research And Policy
Center for Integrated Pest Management
Center for Integrative Medicine University of Maryland School of Medicine
Center for International Earth Science Information Network, Columbia Univ.
Center for In-Vivo Microscopy
Center for Marine Conservation
Center for Marine Conservation, US
Center for Medical Ethics & Health Policy
Center for Medical Robotics and Computer Assisted Surgery
Center for Microanalysis of Materials, University of Illinois
Center for Microbial Ecology, Michigan State Univ.
Center for Mind-Body Medicine
Center for Neural Basis of Cognition, Carnegie Mellon Univ.
Center for Neural Basis of Cognition, Pennsylvania
Center for North American Herpetology
Center for Orthopaedic Research
Center for Pediatric Emergency Medicine
Center for Phycological Documentation, UC Berkeley
Center for Plant Conservation, StLouis, Missouri
Center for Plant Conservation, US
Center for Plant Environmental Stress Physiology, Purdue Univ.
Center for Platelet Function Studies
Center for Policy Alternatives
Center for Pulmonary Infectious Disease Control, Univof Texas
Center for Research & Training in Skin Diseases & Leprosy
Center for Research on Concepts & Cognition, Indiana University
Center for Restoration Ecology, Univof Wisconsin
Center for Rural Emergency Medicine, West Virginia Univ.
Center for Scientific ComputingChemistry(Finland)
Center for Study of Bioterrorism & Emerging Infections
Center for Study of Complementary & Alternative Therapies, U of Va.
Center for Study of Tropical Birds, Texas
Center for Studying Health System Change
Center for Substance Abuse Treatment
Center for Survey Research and Methodology (ZUMA)
Center for Telemedicine Law
Center for Tropical and Subtropical Aquaculture, Hawaii
Center for Tropical Diseases at University of Texas
Center for Urban Ecology, National Park Service 
Center for Urban Restoration Ecology, Rutgers
Center for Veterinary Biologics, USDA
Center for Voice Disorders, Bowman Gray School of Medicine
Center for Voice Disorders, Wake Forest Univ.
Center For Women's Participation
Center of Excellence for Poultry Science, Univof Arkansas
Centers for Disease Control
Centers for Disease Control (CDC) /Tbilisi
Centers for Disease Control and Prevention (CDC)
Centers for Medicare & Medicaid Services
Central America Health Sciences University (Belize Medical College)
Central and Eastern European Sustainable Agriculture
Central Association of Obstetricians and Gynecologists
Central Australian Rural Practitioners Association
Central China Normal University
Central Colleges of the Philippines - Quezon City
Central council for Research in Homoeopathy (CCRH)
Central Council for Research in Unani Medicine (CCRUM)
Central Drug Research Institute (CDRI)
Central European University
Central India Institute of Medical Sciences CIIMS, Nagpur
Central Institute for Deaf, Washington University
Central Institute of English and Foreign Languages
Central Institute of Higher Tibetan Studies
Central Interior Logging Association
Central JALMA Institute for Leprosy
Central Library, Airlangga University, Surabaya
Central Luzon State University
Central Luzon State University- Nueva Ecija
Central New York Chapter American Nephrology Nurses Association
Central New York Mycological Society
Central Office on ICD--CM
Central Philippine University
Central Philippine University [Iloilo]
Central Police University
Central Queensland University
Central Queensland University, Fiji International Campus
Central Radio and TV University
Central Rockies Chapter of Society for Ecological Restoration
Central Saint Martins College of Art & Design
Central Society Of Egyptian Anaesthesia
Central South Forestry University
Central South University
Central States Occupational Medical Association
Central Texas Poison Center
Central University College
Central University for Nationalities
Central Visayas Polytechnic College
Centre Cochrane Français
Centre de Coordination de la Lutte Contre les Infections Nosocomiales Paris-Nord [Français]
Centre de Coordination de la Lutte Contre les Infections Nosocomiales Sud-Ouest (France) [Français]
Centre de Formation et de Perfectionnement des Journalistes
Centre de Recherche en Nutrition Humaine d'Auvergne
Centre de Recherche Public de la Santé
Centre de Recherche sur les Méningites et les Schistosomoses (CERMES) Niger
Centre de Recherche sur les Pathologies Hormonales Gabon
Centre d'Etudes Supérieures des Techniques Industrielles
Centre for Applied Entomology and Parasitology, UK
Centre for Biodiversity and Bioresources, Australia
Centre for Biodiversity and Conservation Biology, Canada
Centre for Biodiversity Research, British Columbia
Centre for Biomedical Engineering Biophysics
Centre for Coastal and Marine Sciences, UK
Centre for Comparative Infectious Diseases
Centre for Ecology & Hydrology, UK
Centre for Evidence Based Mental Health, UK
Centre for Evidence-Based Child Health, UK
Centre for Evidence-Based Dentistry, UK
Centre for Evidence-Based Medicine, UK
Centre for Evidence-Based Medicine, Univ of Toronto
Centre for Evidence-Based Mental Health, UK
Centre for Evidence-Based Pathology, Univof Nottingham, UK
Centre for Evidence-Based Pharmacotherapy, Birmingham, UK
Centre for Evidence-Based Social Services, Exeter, UK
Centre for Health Care Technology of New Zealand
Centre for Health Evidence (Canada)
Centre for Integrated Genomics, Canada
Centre for Legumes in Mediterranean Agriculture
Centre for Marine Science and Technology, Australia
Centre for Mathematical Biology, Oxford
Centre for Medical Research ( SSR ) Mauritius
Centre for Northern Forest Ecosystem Research, Canada
Centre for Parasite Biology, University of Edinburgh
Centre for Pest Information Technology and Transfer, Univof Queensland
Centre for Plant Architecture Informatics, Australia
Centre for Plant Biodiversity Research and Australian National Herbarium
Centre for Psychotherapeutic Studies
Centre for Vision and Visual Cognition, Univof Durham, UK
Centre Hospitalier Baie-des-Chaleurs (Canada) [Français]
Centre Hospitalier de Luxembourg
Centre Hospitalier Universitaire Ibn Rochd de Casablanca
Centre National d'Etudes Agronomiques des Régions Chaudes
Centre of Information and education for Drug Abuse Prevention (Peru)
Centre of Virology, University of Bergen
Centre Technique National d'Etudes et de Recherches sur les Handicaps et les Inadaptations (France) [Français]
Centre Universitaire de Jijel
Centre Universitaire de Tiaret
Centro Cochrane Iberoamericano [Español]
Centro de Cibernetica Aplicada a la Medicina (Cuba) [Español]
Centro de Desarrollo Informático para la Salud Pública (Cuba) [Español]
Centro de Ecologia e Biologia Vegetal Faculdade de Ciências, Universidade de Lisboa
Centro de Estudios Avanzados de Puerto Rico y El Caribe
Centro de Estudios Infectológicos
Centro de Estudios Médico Homeopáticos Hahnemanniano de Córdoba
Centro de Estudios para el Desarrollo de la Industria Químico-
Centro de Estudios Para el Desarrollo de la Industria Quimico-Farmaceutica Argentina (CEDIQUIFA)
Centro de Estudios Universitarios Monterrey
Centro de Estudios Universitarios Xochicalco
Centro de Estudos Florestais Instituto Superior de Agronomia
Centro de Genética e Biologia Molecular Universidade de Lisboa
Centro de Investigação em Recursos Naturais Universidade dos Açores
Centro de Micologia Universidade de Lisboa
Centro de Patogénese Molecular Faculdade de Farmácia, Universidade de Lisboa
Centro de Psiquiatría Genética
Centro De Rehabilitacion Para Ciegos
Centro di Ricerche in Bioclimatologia Medica, Biotecnologie e Medicine Naturali [Italiano]
Centro Escolar University
Centro Escolar University - Manila
CENTRO LATINOAMERICANO DE PERINATOLOGIA Y DESARROLLO HUMANO (CLAP)
Centro Latinoamericano de Medicina de Desastres de Cuba CLAMED
Centro Latinoamericano de Peronatología y Desarrollo Humano CLAP/OPS
Centro Médico Fueguino
Centro Nacional de la Transfusión Sanguínea
Centro nazionale di documentazione e analisi per l'infanzia e l'adolescenza [Italiano]
Centro Oncológico Buenos Aires
Centro Panamericano de Fiebre Aftosa
Centro Panamericano de Ingeniería Sanitaria y Ciencias del Ambiente CEPIS/OPS
Centro Regional Universitário de Espiríto Santo do Pinhal
CENTRO ROSARINO DE ESTUDIOS PERINATALES (CREP)
Centro Studi e Ricerche in Medicina (Italy) - CSeRMEG
Centro Unico de Donación de Organos - Villa Constitución
Centro Universitário de Araraquara
Centro Universitário de João Pessoa
Centro Universitário Monte Serrat
Centro Virtual de Enfermedades Vasculares
Centrul de Inginerie Obiective Nucleare
Centrul de Sanatate si Medicina Preventiva
Centrul Medical de Servicii de Sanatate si Conducere, Timisoara
Centrum voor Verslavingsonderzoek (Addiction Research Institute), Universiteit Utrecht
Ceramic Society of Japan
CERF - Canine Eye Registration Foundation
Certification Board for Urologic Nurses andAssociates (CBUNA)
Certification Board of Infection Control and Epidemiology (CBIC)
Cervical Spine Reseach Society (US)
CESAR (Center for Substance Abuse Research)
CESAR, Center for Substance Abuse Research, University of Maryland
Ceská asociace dodavatelu zdravotnickych prostredku
Ceská asociace ergoterapeutu
Ceska Chemicka Spolecnost
Ceská gastroenterologická spolecnost
Ceská gynekologická a porodnická spolecnost
Ceská hepatologická spolecnost
Ceská kardiologická spolecnost
Ceská lékárnická komora
Ceská lékarská komora
Ceská onkologická spolecnost
Ceská radiobiologická spolecnost
Ceska Spolecnost Chemiscka
Ceská spolecnost nukleární medicíny
Ceska Spolecnost pro Jakost
Ceská spolecnost pro ortopedii a traumatologii
Ceská spolecnost pro psychoanalytyckou psychoterapii
Ceská spolecnost refrakcní a kataraktové chirurgie
Ceská Stomatologická komora
Ceskoslovenská SinoBiologická spolecnost
Cesky Cerveny kríz
Cesky registr dárcu kostní drene
Cetacean Society International
CETYS Universidad
Ceylon College of Physicians
Ceylon Institute of Scientific and Industrial Research - CISIR
CFA - Cat Fancier's Association
CFERR - Commission on Food, Environment, and Renewable Resources (National Association of State Universities and Land-Grant Colleges)
CFM - Conselho Federal de Medicina
CFMV - Conselho Federal de Medicina Veterinária (Brazilian Veterinary Medical Association)
CFPC - Colégio de Médicos de Família do Canadá
CF-WEB: Cystic Fibrosis Website
CGIAR - Consultative Group on International Agricultural Research
Challenger Society for Marine Science - UK
Chalmers University of Technology
Chancery International University
Chandigarh Ophthalmological Society
Chang Gung University
Chang Jung University
Changsha Railway University
Changsha University of Electric Power
Changwon National University
Chao Yang University of Science and Technology
Charles ADana Foundation and Dana Alliance for Brain Initiatives
Charles Sturt University
Charles University Prague
Charlotte County Medical Society
Chartered Institution of Water and Environmental Management - UK
Chartered Society of Physiotherapy UK
Cheju National University
Cheju National University of Education
Cheljabinsk State Institute of Teacher Training
Cheljabinsk State University
Cheljabinsk University of Agricultural Engineering
Chemical Abstracts Service 
Chemical and Biological Arms Control Institue
Chemical and Biological Defense Information Analysis Center
Chemical and Biological Information Analysis Center, US
Chemical and Biological Weapons Nonproliferation Project
Chemical Hazards Communication Society
Chemical Heritage Foundation 
Chemical Industries Association
Chemical Industry Institute of Toxicology
Chemical Injury Information Network
Chemical Institute of Canada
Chemical Research Society of India
Chemical Safety and Hazard Investigation Board
Chemical Society of Ethiopia (CSE) (en)
Chemical Society of Japan (CSJ) (en, ja)
Chengdu Institute of Technology
Chengdu University of Traditional Chinese Medicine
Chernivci State University
ChestNet: American College of Chest Physicians
CHILEAN SOCIETY OF PEDIATRIC SURGERY
Chia Nana College of Pharmacy and Science
Chiang Mai University
Chiba Institute of Technology
Chiba Keizai University
Chiba Prefecture Medical Association
Chiba University
Chiba University of Commerce
Chicago Academy of Sciences
Chicago Asthma Consortium
Chicago Dental Society
Chicago Herpetological Society
Chicago Linguistic Society
Chicago Medical Society
Chicago Ophthalmological Society
Chicago Psychoanalytic Institute
Chikushi Jogakuen University
Child Aid Association
Child Neurology Society
Child Psychologist's Association
Childhood Burn Foundation of Republic of China
Children and Adults with Attention Deficit Disorders
Children with AIDS Project
Children's Choanal Atresia Foundation
Children's Chronic Arthritis Association (UK)
Children's Environmental Health Network
Children's Eye Research Foundation
Children's Health Environmental Coalition
Children's Liver Disease Foundation
Children's Medical Research Institute
Children's Nutrition Research Center, Baylor Univ.
Children's Organ Transplant Association
Chilean Association of Microbiology