1. Bone Diseases Unit, Department of Rheumatology, Gaetano Pini Institute, Via Pini, 9, 20122 Milan, Italy
2. Rheumatology Unit, Department of Medicine, University of Verona, Verona, Italy
3. Bone Diseases Unit, Department of Rheumatology, Gaetano Pini Institute, Milan, Italy
4. ULSS 9, Verona, Italy
5. Department of Medical and Surgical Specialties, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
6. Unit of Rheumatology, University of Siena, Siena, Italy
7. Clinical Research, Abiogen Pharma, Pisa, Italy