Safe Kids Worldwide
Safer Child, Inc.
SAMHSA Fetal Alcohol Spectrum Disorders (FASD) Center for Excellence
SAMHSA's National Clearinghouse for Alcohol and Drug Information
SAMHSA's National Mental Health Information Center, Center for Mental Health Services
Schepens Eye Research Institute
School Nutrition Association
Science Reference Section, Science, Technology and Business Division, Library of Congress
Scleroderma Research Foundation
Scoliosis Association, Inc.
Scoliosis Research Society
Screening for Mental Health, Inc.
Scripps Gerontology Center
Seeing Eye, Inc.
Sexuality Information and Education Council of the United States
Shape Up America!
Shriners Hospitals for Children
Shwachman-Diamond Syndrome Foundation
Sickle Cell Disease Association of America
Sickle Cell Information Center
Sight and Hearing Association
Sjogren's Syndrome Foundation, Inc.
Skin Cancer Foundation
Social Security Administration
Society for Adolescent Medicine
Society for Clinical and Experimental Hypnosis
Society for Neuroscience
Society for Nutrition Education
Society for Progressive Supranuclear Palsy
Society for Reproductive Endocrinology and Infertility
Society for Surgery of the Alimentary Tract
Society for the Psychological Study of Men and Masculinity
Society for Vascular Medicine and Biology
Society for Vascular Surgery
Society for Women's Health Research
Society of American Indian Dentists
Society of Gastroenterology Nurses and Associates, Inc.
Society of Interventional Radiology
Society of Otorhinolaryngology and Head-Neck Nurses, Inc.
Society of Thoracic Surgeons
Sotos Syndrome Support Association
South Asian Public Health Association
South Carolina Department of Health and Environmental Control
South Dakota Department of Health
Southeastern Guide Dogs, Inc.
Spina Bifida Association of America
Spinal Cord Injury Information Network
Spinal Cord Society
Spondylitis Association of America
SPRY Foundation (Setting Priorities for Retirement Years)
Stanford Center for Narcolepsy
Stanford Prevention Research Center
Starlight Starbright Children's Foundation
Stevens Johnson Syndrome Foundation (Julie Foundation for Allergic Drug Reactions)
Stickler Involved People
Students Against Destructive Decisions
Stuttering Foundation of America
Substance Abuse and Mental Health Data Archive
Substance Abuse and Mental Health Services Administration, U.S. Department of Health and Human Services
Substance Abuse Policy Research Program
Sudden Arrhythmia Death Syndromes (SADS) Foundation
Sudden Infant Death Syndrome Alliance
Sudden Infant Death Syndrome Network, Inc.
Support for People with Oral and Head and Neck Cancer, Inc.
Support Organization for Trisomy 18, 13 and Related Disorders
Surgical Eye Expeditions International
Survivors of Incest Anonymous
Susan G. Komen Breast Cancer Foundation