1. 1Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital, Stockholm, Sweden
2. 2Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
3. 3Department of Pediatric Endocrine Disease, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
4. 4Medizinische Klinik and Poliklinik IV, Department of Endocrinology, University Hospital Munich, Munich, Germany
5. 5Department of Andrology and Reproductive Endocrinology, Medical University of Lodz, Lodz, Poland
6. 6Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
7. 7Department of Paediatric Endocrinology, Astrid Lindgren Children Hospital, Karolinska University Hospital, Stockholm, Sweden
8. 8Coordinating Center for Clinical Studies, Charité Universitätsmedizin, Berlin, Germany
9. 9Paris-Sud University, Orsay, France
10. 10Department of Pediatric Endocrinology, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre, France
11. 11Department of Medical Psychology, VU University Medical Center, Amsterdam, The Netherlands
12. 12Department of Paediatric Endocrinology and Diabetology, Charité Universitätsmedizin, Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany