This web site is sponsored by the Centers for Disease Control and Prevention , National Center on Birth Defects and Developmental Disabilities.
This web site is sponsored by The American Foundation for the Blind (AFB). This nonprofit organization is dedicated to enriching the lives of people with vision loss. The AFB headquarters is located in New York City and houses the Helen Keller Archives,
The Alzheimer's Association is the leading, global voluntary health organization in Alzheimer's care and support, and the largest private, nonprofit funder of Alzheimer's research.
The A.D.A.M. Medical Encyclopedia is part of the MedlinePlus website. This website is sponsored by the U.S. National Library of Medicine and the National Institutes of Health.