1. Harvard Medical School Boston Massachusetts USA
2. Center for Neurointestinal Health, Division of Gastroenterology Massachusetts General Hospital Boston Massachusetts USA
3. Mass General Brigham Eating Disorders Research Collaborative Boston Massachusetts USA
4. The Jesse Z. and Sara Lea Shafer Institute of Endocrinology and Diabetes, National Center for Childhood Diabetes Schneider Children's Medical Center of Israel Petah Tikva Israel
5. Neuroendocrine Unit, Division of Endocrinology, Department of Medicine Massachusetts General Hospital Boston Massachusetts USA
6. Eating Disorders Clinical and Research Program Massachusetts General Hospital Boston Massachusetts USA
7. Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology Massachusetts General Hospital Charlestown Massachusetts USA
8. Division of Adolescent and Young Adult Medicine Massachusetts General Hospital Boston Massachusetts USA
9. Department of Endocrinology and Nutrition, Hospital de la Santa Creu i Sant Pau IR‐SANTPAU Barcelona Spain
10. Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER Unidad 747), ISCIII Barcelona Spain
11. Department of Medicine University of Vic – Central University of Catalonia Barcelona Spain
12. Division of Pediatric Endocrinology Massachusetts General Hospital Boston Massachusetts USA
13. Great Ormond Street Institute of Child Health University College London London UK
14. Center for Eating and Feeding Disorders Research, Psychiatric Centre Ballerup Mental Health Services in the Capital Region of Denmark Copenhagen Denmark
15. Institute of Biological Psychiatry, Mental Health Center Sct. Hans Mental Health Services Copenhagen Roskilde Denmark