1. Division of Pulmonary and Sleep Medicine, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
2. Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
3. Division of Endocrinology and Diabetes, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
4. Trisomy 21 Program, Division of Developmental Behavioral Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
5. Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania