Institute of Pediatrics, Department of Neuropediatrics, Paracelsus Medical University, General Hospital of Nuremberg, Breslauer Straße 201, 90471 Nürnberg, Germany. Electronic address: Nicole.heussinger@klinikum-nuernberg.de. University of Duisburg-Essen, Germany, Children's Hospital, Department of Neuropediatrics, Developmental Neurology and Social Pediatrics, Hufelandstraße 55, 45147 Essen, Germany. Electronic address: adela.dellamarina@uk-essen.de. Helmholtz Zentrum München Institute of Diabetes Research, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany. Electronic address: andreas.beyerlein@helmholtz-muenchen.de. University of Duisburg-Essen, Germany, Children's Hospital, Department of Neuropediatrics, Developmental Neurology and Social Pediatrics, Hufelandstraße 55, 45147 Essen, Germany. Electronic address: baerbel.leiendecker@uk-essen.de. Children's Hospital Aschaffenburg-Alzenau, Department of Pediatrics and Neuropediatrics, Am Hasenkopf 1, 63739 Aschaffenburg, Germany. Electronic address: sofia@herrmannalves.de. Department of Pediatric Cardiology, Ludwig Maximilians-University of Munich, Marchioninistr. 15, 81377 Munich, Germany. Electronic address: Robert.DallaPozza@med.uni-muenchen.de. Children's Hospital Aschaffenburg-Alzenau, Department of Pediatrics and Neuropediatrics, Am Hasenkopf 1, 63739 Aschaffenburg, Germany. Electronic address: joerg.klepper@klinikum-ab-alz.de.