1. Department of Reproductive Medicine and Child Development, Section of Gynecology and Obstetrics, University of Pisa, Pisa; the Department of Surgical Sciences, Chair of Obstetrics and Gynecology, University of Udine (F.P.), Udine;
2. Endocrine Unit of the Italian Research Council, CNR (E.C., M.L.), Pisa;
3. the Department of Obstetrics and Gynecology, University of Pavia (R.E.N.), Pavia;
4. the Department of Obstetrics and Gynecology, University of Catania (M.P.), Catania, Italy;
5. the Department of Psychiatry, Veterans Administration Hospital (R.H.P.), San Diego, California 92161