1. Endocrine Unit (T.S., H.J.), Departments of Medicine and Pediatrics, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114
2. Innovative Drug Discovery Laboratories (T.S., I.U., Y.Y.), Kyowa Hakko Kirin Co., Ltd., Gunma 370-1295, Japan
3. Nephrology Unit (T.I., M.E.), Departments of Medicine and Pediatrics, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114
4. Department of Pediatrics (K.W.-P., I.B.S.), David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California 90095
5. Division of Nephrology and Hypertension (M.W.), Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida 33136
6. Pediatric Nephrology Unit (H.J.), Departments of Medicine and Pediatrics, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114