1. Department of Pediatrics and Adolescent Medicine, Division of Pediatric Endocrinology and Diabetes; University Medical Center Ulm; 89075 Ulm Germany
2. Department of Internal Medicine II, Cardiology; University Medical Center Ulm; 89075 Ulm Germany
3. Faculty of Health Care Krefeld; Niederrhein University of Applied Sciences; 47805 Krefeld Germany
4. Institute of Epidemiology and Medical Biometry, Ulm University; 89075 Ulm Germany
5. German Cancer Research Center (DKFZ), Division of Clinical Epidemiology and Aging Research; 69120 Heidelberg Germany