1Division of Endocrinology and Diabetes, Medical Faculty, RWTH Aachen University, Aachen, Germany
2German Center for Diabetes Research (DZD), Neuherberg
3Institute of Epidemiology and Medical Biometry, ZIBMT, University of Ulm, Ulm, Germany
4Children’s Hospital Wilhelmstift, Hamburg, Germany
5Diabetes Center for Children and Adolescents, Children’s Hospital AUF DER BULT, Hannover, Germany
6Department of Pediatrics, Medical University of Innsbruck, Innsbruck, Austria
7Department of Pediatrics, Centre Hospitalier de Luxembourg, Luxembourg City, Luxembourg
8Division of Paediatric Endocrinology and Diabetology, Center of Child and Adolescent Medicine, Justus Liebig University Giessen, Giessen, Germany
9Hospital for Children and Adolescents, University of Leipzig, Leipzig, Germany
10Institute for Biometrics and Epidemiology, German Diabetes Center, Leibniz Center at the University of Düsseldorf, Düsseldorf, Germany