1. Divisions of Gastroenterology, Hepatology, and Nutrition, and
2. Department of Pediatrics,
3. Center for Clinical Epidemiology and Biostatistics, and
4. Center for Weight and Eating Disorders, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania;eExponent, Inc., Washington, DC; and
5. Department of Pediatrics, University of Buffalo, Buffalo, New York
6. Oncology, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania;