1. Harvard University, Cambridge, Massachusetts (S.S.B.)
2. Harvard Medical School, Boston, Massachusetts (A.Z., A.L.Z.)
3. Massachusetts General Hospital, MGH Weight Center, Department of Medicine-Division of Endocrinology-Neuroendocrine, Department of Pediatrics-Division of Endocrinology, Nutrition Obesity Research Center at Harvard (NORCH), Harvard Medical School, Boston, Massachusetts (F.C.S.).