1. Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School and Brigham and Women's Hospital, Boston. Massachusetts; Laboratory for Human Reproduction and Reproductive Biology, Room 449, Boston Lying In, 221 Logwood Avenue, Boston, MA 02115.
2. Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School and Brigham and Women's Hospital, Boston. Massachusetts