1. Division of Reproductive Genetics, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
2. The Columbus Center for Women's Health Research, Columbus, Ohio.
3. HERQuLES, Abt Associates Inc., Bethesda, Maryland.
4. HERQuLES, Abt Associates Inc., Lexington, Massachusetts.
5. Novo Nordisk Inc., Princeton, New Jersey.