1. Division of Endocrinology and Diabetes, Medical Faculty; RWTH Aachen University, German Center for Diabetes Research (DZD); Aachen Germany
2. Department of Gynecological Endocrinology and Reproductive Medicine, Medical Faculty; RWTH Aachen University, German Center for Diabetes Research (DZD); Aachen Germany
3. Department of Pediatrics; Bethlehem Hospital; Stolberg Germany
4. Hospital for Children and Adolescents; University of Leipzig; Leipzig Germany
5. Department of Pediatrics; University of Lübeck; Lübeck Germany
6. Department of Pediatrics; Paracelsus Medical University Salzburg; Salzburg Austria
7. Institute of Epidemiology and Medical Biometry; ZIBMT, University of Ulm, German Center for Diabetes Research (DZD); Ulm Germany
8. Institute for Biometrics and Epidemiology; Leibniz Center at University of Düsseldorf, German Center for Diabetes Research (DZD); Düsseldorf Germany