[1] Jaeb Ctr Hlth Res, Tampa, FL 33647 USA
[2] Univ Ulm, ZIBMT, Inst Epidemiol & Med Biometry, Ulm, Germany
[3] German Ctr Diabet Res DZD, Munich, Germany
[4] Med Univ Innsbruck, Dept Pediat, Innsbruck, Austria
[5] Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA
[6] Childrens Hosp Bult, Hannover, Germany
[7] Childrens Mercy Hosp, Kansas City, MO 64108 USA
[8] Univ Childrens Hosp, Bochum, Germany
[9] Stanford Univ, Dept Pediat, Div Endocrinol, Stanford, CA 94305 USA
[10] Stanford Univ, Stanford Diabet Res Ctr, Stanford, CA 94305 USA