10 Institute of Endocrine and Metabolic Sciences, San Raffaele, Vita-Salute University and IRCCS Hospital, Milano, Italy.9 Service of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.8 Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy.7 Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.6 Division of Endocrinology, Escola Paulista de Medicina - Universidade Federal de Sao Paulo (EPM-UNIFESP), Sao Paulo, Brazil.5 Laboratory of Clinical and Experimental Endocrinology, Department of chronic diseases, metabolism and ageing, Leuven, KU, Belgium.4 University of Wisconsin, Madison, WI, USA.3 McGuire Veterans Affairs Medical Center and Virginia Commonwealth University School of Medicine, Richmond, VA, USA.

2 Institute of Endocrine and Metabolic Sciences, San Raffaele, Vita-Salute University and IRCCS Hospital, Milano, Italy.1 Department of Medicine, Endocrinology Division, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA.

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