1. Endocrine Section of First Department of Medicine (E.D.-K.), Laiko Hospital, Medical School University of Athens, 11527 Athens, Greece
2. Department of Pediatrics (J.-P.B.), Centre Hospitalier Universitaire de Liege, 4000 Liege, Belgium
3. Department of Obstetrics, Gynecology, and Reproductive Sciences (L.C.G.), University of California San Francisco, San Francisco, California 94131
4. Department of Environmental Health (R.H.), Harvard School of Public Health, Boston, Massachusetts 02115
5. Department of Urology (G.S.P.), University of Illinois at Chicago, Chicago, Illinois 60612
6. Department of Anatomy and Cell Biology (A.M.S.), Tufts University School of Medicine, Boston, Massachusetts 02111
7. Biology Department (R.T.Z.), University of Massachusetts, Amherst, Massachusetts 01003
8. Division of Pharmacology and Toxicology (A.C.G.), The University of Texas at Austin, Austin, Texas 78712