1. Endocrinology in Charlottenburg Berlin Germany
2. Medizinische Klinik und Poliklinik IV Ludwig‐Maximilians‐Universität Munich Germany
3. Charité Universitätsmedizin Berlin Coordinating Center for Clinical Studies Berlin Germany
4. Institute of Biometry and Clinical Epidemiology Charité Universitätsmedizin Berlin Berlin Germany
5. Berlin Institute of Health (BIH) Berlin Germany
6. Department of Pediatric Endocrinology Amalia Children's Hospital Radboud University Medical Centre Nijmegen The Netherlands
7. Department of Molecular Medicine and Surgery Karolinska Institutet Stockholm Sweden
8. Department of Endocrinology, Metabolism and Diabetes Karolinska University Hospital Stockholm Sweden