1. Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
2. Institute of Human Genetics, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
3. Department of Pediatrics, University Erlangen, Erlangen, Germany
4. Institute for Brain, Cognition and Behaviour–Centre for Neuroscience, GL Nijmegen, Netherlands
5. Institute of Biochemistry and Molecular Biology, University of Bonn, Bonn, Germany
6. Department of Internal Medicine, Division III, Universitätsklinikum Bonn, Bonn, Germany
7. Gemeinschaftspraxis für Kinder- und Jugendmedizin, Eckernförde, Germany
8. Institute of Human Genetics, Ulm University and Ulm University Medical Center, Ulm, Germany
9. Department of Pediatrics, Division of Pediatric Endocrinology, University Luebeck, Luebeck, Germany
10. Department of Pediatrics, Diakonissen-Stiftungs-Krankenhaus, Speyer, Germany
11. Gemeinschaftspraxis für Kinderchirurgie, Kronshagen, Germany
12. Department of Pediatric Endocrinology, Ghent University Hospital, Ghent University, Ghent, Belgium
13. Wilhelmina Kinderziekenhuis, Division of Pediatric Endocrinology, Utrecht, Netherlands
14. Department of Molecular Biology, Radboud University, Nijmegen, Netherlands