1. 1Faculty of Medicine, University of Oslo, Oslo, Norway
2. 2Section of Specialized Endocrinology, Department of Endocrinology, Medical Clinic, Oslo University Hospital, Oslo, Norway
3. 3Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
4. 4Schön-Klinik Hamburg, Department of Endocrine Surgery, Hamburg, Germany
5. 5Division of Endocrinology, Department of Medicine, Leiden University Medical Center (LUMC), Leiden, the Netherlands
6. 6Centro Hospitalar e Universitário de Coimbra, i3S – Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Porto, Portugal
7. 7Nuffield Department of Women’s and Reproductive Health, University of Oxford, Oxford, UK
8. 8Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
9. 9Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University, IRCCS San Raffaele Hospital, Milan, Italy
10. 10Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital, Stockholm, Sweden
11. 11Endocrinology, Abdominal Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
12. 12The National Medical Research Centre for Endocrinology, Moscow, Russia
13. 13Edinburgh Centre for Endocrinology & Diabetes, Royal Infirmary of Edinburgh, Edinburgh, UK
14. 14Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
15. 15Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
16. 16Thyroid Center, Luzerner Kantonsspital, Luzern, Switzerland
17. 17Division of Rare Diseases, Department of Pediatrics, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
18. 18Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
19. 19Division of Endocrine Surgery, Department of General Surgery, Ege University Hospital, Izmir, Turkey
20. 20Department of Internal Medicine and Medical Disciplines, Sapienza University of Rome, Rome, Italy
21. 21Department of Digestive, Hepatobiliary and Endocrine Surgery, Paris Descartes University, Cochin Hospital, Paris, France
22. 22Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Nephrology Department, Boulevard de l’Hôpital, Paris, France
23. 23Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
24. 24Université de Paris Saclay, AP-HP, Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphate, Filière OSCAR, Service d’Endocrinologie et Diabète de l’Enfant, Hôpital Bicêtre Paris Saclay, Le Kremlin Bicêtre, France
25. 25Department of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria
26. 26Reference Centre for Rare Bone, Calcium and Phosphate Disorders – University Hospital Ghent, Ghent, Belgium
27. 27Center for Healthy Aging, Department of Medicine III, Technische Universität Dresden Medical Center, Dresden, Germany
28. 28Endokrinologikum Göttingen, Georg-August-University Göttingen, Göttingen, Germany
29. 29Université Paris-Saclay, Inserm, Physiologie et Physiopathologie Endocriniennes, Assistance Publique-Hôpitaux de Paris, Hôpital Bicêtre, Service d’Endocrinologie et des Maladies de la Reproduction, Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphate, Le Kremlin-Bicêtre, France