[1] Univ Penn, Div Endocrinol Diabet & Metab, Philadelphia, PA 19104 USA
[2] Perelman Sch Med, Philadelphia, PA 19104 USA
[3] Childrens Hosp Los Angeles, Pediat Endocrinol, Los Angeles, CA USA
[4] Wake Forest Sch Med, Biostat Sci, Winston Salem, NC USA
[5] Kaiser Permanente Southern Calif, Dept Res & Evaluat, Pasadena, CA USA
[6] Univ Colorado, Childrens Hosp Colorado, Barbara Davis Ctr Diabet, Denver, CO 80202 USA
[7] Univ Washington, Dept Pediat, Seattle, WA 98195 USA
[8] Univ Cincinnati, Med Ctr, Dept Internal Med, Div Endocrinol, Cincinnati, OH 45267 USA
[9] Cincinnati Childrens Hosp Med Ctr, Dept Pediat, Div Endocrinol, Cincinnati, OH 45229 USA
[10] Ctr Dis Control & Prevent, Div Diabet Translat, Atlanta, GA USA
[11] Univ Colorado, Pediat & Epidemiol, Denver, CO 80202 USA