1. Neuroendocrine Unit (K.E.A., T.N., D.C., M.R., N.M., M.M.), Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114
2. Division of Sports Medicine (K.E.A.), Children's Hospital, Boston, Massachusetts 02116
3. Pediatric Endocrine Unit (M.R., M.M.), Mass General Hospital for Children and Harvard Medical School, Boston, Massachusetts 02114
4. Endocrine Division (A.P.T., M.L.B.), Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114