1. Division of Endocrinology, Department of Medicine Vagelos College of Physicians and Surgeons, Columbia University New York NY USA
2. Division of Endocrinology and Metabolism McMaster University Hamilton ON Canada
3. Calcium Metabolism and Osteoporosis Program, WHO CC for Metabolic Bone Disorders, Division of Endocrinology American University of Beirut Beirut Lebanon
4. Department of Clinical and Experimental Medicine University of Pisa, Endocrine Unit 2, University Hospital of Pisa Pisa Italy
5. Department of Clinical, Internal, Anaesthesiologic and Cardiovascular Sciences, ‘Sapienza’ Rome University Rome Italy
6. Department of Surgical Oncology University of Texas MD Anderson Cancer Center Houston Texas USA
7. Department of Surgery, Universitat Autònoma de Barcelona Barcelona Spain
8. Academic Endocrine Unit, Radcliffe Department of Medicine University of Oxford, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Churchill Hospital Oxford UK
9. Department of Health Research Methods, Evidence and Impact McMaster University Hamilton ON Canada
10. Endocrine Unit, Department of Medicine Massachusetts General Hospital and Harvard Medical School Boston MA USA
11. Mayo Clinic Division of Endocrinology, Diabetes, Metabolism, and Nutrition Mayo Clinic Rochester MN USA
12. Fondazione Italiana sulla Ricerca sulle Malattie dell'Osso (F.I.R.M.O. Foundation) Florence Italy