[1] Justus Liebig Univ, Ctr Child & Adolescent Med, Giessen, Germany
[2] German Diabet Ctr, Dusseldorf, Germany
[3] German Ctr Diabet Res DZD, Munich, Germany
[4] Univ Ulm, Inst Epidemiol & Med Biometry, ZIBMT, Ulm, Germany
[5] Helios Clin Pforzheim, Hosp Children & Adolescents, Pforzheim, Germany
[6] Univ Leipzig, Hosp Children & Adolescents, Leipzig, Germany
[7] Univ Childrens Hosp Heidelberg, Heidelberg, Germany
[8] Klinikum Traunstein, Hosp Children & Adolescents, Traunstein, Germany
[9] Bremen Cent Clin, Parent Child Ctr Prof Hess, Bremen, Germany
[10] Altonaer Kinderkrankenhaus, Hamburg, Germany