1. March of Dimes Foundation, 1275 Mamaroneck Avenue, White Plains, NY 10605, USA. .
2. National Coalition for Health Professional Education in Genetics, Lutherville, MD 21093, USA
3. Genetic Alliance, Washington, DC 20008, USA
4. Massachusetts General Hospital, Boston, MA 02114, USA
5. Health Resources Services Administration, Rockville, MD 20857, USA
6. Consultant, Bethesda, MD 20892, USA
7. March of Dimes Foundation, 1275 Mamaroneck Avenue, White Plains, NY 10605, USA