1. Division of Reproductive Endocrinology and Fertility (J.R.C., A.A.S., T.M.P.)Durham, North Carolina 27713
2. Departments of Obstetrics and Gynecology (J.R.C., A.A.S., D.W.S., T.M.P.)Durham, North Carolina 27713
3. Cell Biology (D.W.S.), Duke University Medical Center, Durham, North Carolina 27713