Online Mendelian Inheritance in Man (OMIM)
Alliance of Genetic Support Groups
CDC Office of Genetics and Disease Prevention Home Page
National Organization for Rare Diseases (NORD)
A World of Genetics Societies
American College of Medical Genetics: Policy Statements
Mountain States Regional Genetic Services Network
Genes and disease
Intersex Society of North American
Gene Tests
Clinical Genetics Home Page
Teratology Society
National Center for Biotechnology Information
March of Dimes
GeneTests
Cytogenetics