1. From the Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA (MM, JC, KKM, and AK); the Pediatric Endocrine Unit, Massachusetts General Hospital for Children and Harvard Medical School, Boston, MA (MM); the Division of Adolescent Medicine, Hospital for Sick Kids, Toronto, Canada (DKK and SJM); the Wilkins Center for Eating Disorders, Greenwich, CT (DM); and