1. Center for Endocrinology, Diabetes, and Metabolism, Children's Hospital Los Angeles, Los Angeles, California.
2. Jaeb Center for Health Research, Tampa, Florida.
3. Pediatric Endocrinology, Stanford University, Stanford, California.
4. Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas.
5. Pediatrics, University of Florida, Gainesville, Florida.
6. Pediatrics, Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, Colorado.
7. Department of Pediatric Endocrinology, Mott Children's Hospital, University of Michigan, Ann Arbor, Michigan.
8. Child Health Evaluation and Research Unit, University of Michigan, Ann Arbor, Michigan.
9. Pediatric Endocrinology, Yale University, New Haven, Connecticut.