1. Neuroendocrine Unit Massachusetts General Hospital and Harvard Medical School Boston MA USA
2. Division of Sports Medicine Boston Children's Hospital and Harvard Medical School Boston MA USA
3. Division of Pediatric Endocrinology Massachusetts General Hospital for Children and Harvard Medical School Boston MA USA
4. Eating Disorders Clinical and Research Program, Department of Psychiatry Massachusetts General Hospital and Harvard Medical School Boston MA USA
5. Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Division of Endocrinology Massachusetts General Hospital, and Harvard Medical School Boston MA USA
6. Biostatistics Center Massachusetts General Hospital and Harvard Medical School Boston MA USA