1Division of Endocrinology, Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
2Division of Endocrinology and Metabolism, McMaster University, Hamilton, Canada
3Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, MN, USA
4Endocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
5Fondazione Italiana sulla Ricerca sulle Malattie dell’Osso (FIRMO Foundation), Florence, Italy