1. Divisions of Pediatric Endocrinology and Diabetes (D.N., P.G.B., K.I., M.F.),Durham, North Carolina 27710
2. Advanced Analytics Division, SAS Institute Inc (M. B.), Cary, North Carolina 27513
3. the Duke Molecular Physiology Institute (J.B., M.M., R.S., O.I., M.F.),Durham, North Carolina 27710
4. the Division of General Pediatrics (D.D., S.A.), Duke University Medical Center, Durham, North Carolina 27710