1. San Francisco Coordinating Center (J.S.L., S.R.C.), California Pacific Medical Center Research Institute, San Francisco, California 94107
2. Division of Endocrinology and Metabolism (J.S.L.), San Francisco, California 94143
3. Division of Research (B.E.), Kaiser Permanente Medical Care Program, Northern California, Oakland, California 94612
4. Departments of Obstetrics and Gynecology, and Preventive Medicine (F.Z.S.), University of Southern California Keck School of Medicine, Los Angeles, California 90033
5. San Francisco General Hospital, Department of Epidemiology and Biostatistics and Women’s Health Clinical Research Center (E.V., D.G.), San Francisco, California 94143
6. Berlex Laboratories, Inc. (V.H.), Montville, New Jersey 07045
7. Department of Epidemiology (J.A.C.), University of Pittsburgh, Pittsburgh, Pennsylvania 15261
8. Esoterix Endocrinology Inc. (W.C.), Calabasas, California 91301
9. SFBC Taylor Technology (J.S.), Inc., Princeton, New Jersey 08540
10. Division of General Internal Medicine, Department of Medicine (M.S.B.), University of California, San Francisco, California 94143
11. Department of Biochemistry (E.F., M.D.), Royal Marsden Hospital, London SW3 6JJ, United Kingdom