Below are some helpful Internet resources on this topic. Mayo Clinic does not own or control any of these sites and is not responsible for their content. Inclusion of these sites does not imply endorsement by Mayo Clinic.
www.nlm.nih.gov/medlineplus
MEDLINEplus - National Library of Medicine
www.geneticalliance.org
Genetic Alliance
www.marchofdimes.com
March of Dimes Birth Defects Foundation
www.rarediseases.org
National Organization for Rare Disorders (NORD)
www.ntsad.org
National Tay-Sachs & Allied Diseases Association