1. Developmental Endocrinology Research Group, School of Medicine, Dentistry & Nursing, University of Glasgow, Glasgow, UK
2. Office for Rare Conditions, Royal Hospital for Children & Queen Elizabeth University Hospital, Glasgow, UK
3. Department of Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, the Netherlands
4. Department of Internal Medicine and Paediatrics, Ghent University, Belgium
5. Department of Paediatric Endocrinology, Ghent University Hospital, Ghent, Belgium
6. Diabetes Center AUF DER BULT, Hannover, Germany
7. UCL GOS Institute of Child Health, London
8. Department of Medicine & Clinical Epidemiology, Leiden University Medical Centre, Leiden, the Netherlands
9. Division of Paediatric Endocrinology and Diabetes, Department of Paediatrics and Adolescent Medicine, University of Lübeck, Lübeck, Germany
10. AP-HP, Université Paris Saclay, INSERM, Bicêtre Paris Saclay Hospital, le Kremlin Bicêtre, France
11. Sorbonne Université, Inserm, Centre de recherche Sainte Antoine, APHP, Hôpital des Enfants Armand Trousseau, Paris, France
12. Pediatric Endocrinology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
13. Clinical Genetics and Endocrinology Laboratory, Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
14. Department of Endocrine and Metabolic Diseases, Istituto Auxologico Italiano IRCCS, Milan, Italy
15. Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
16. Endokrinologie, Medizinische Klinik Innenstadt und Poliklinik IV, Klinikum der Universität München, Munich, Germany
17. Department of Pediatrics, Motol University Hospital and 2nd Faculty of Medicine, Charles University, Prague, Czech Republic
18. National Centre for Rare Diseases, Istituto Superiore di Sanità, Rome, Italy
19. Erasmus Medical Centre, Department of Internal Medicine, Academic Centre for Thyroid Diseases, Rotterdam, the Netherlands
20. Department of Endocrinology and Metabolism, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, the Netherlands
21. Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, the Netherlands