1. Rheumatology Unit, Department of Clinical Medicine and Surgery, University Federico II, Naples, Italy
2. Rheumatology Unit, Department of Medicine DIMED, University of Padova, Padova, Italy
3. Department of Medicine and Health Sciences “Vincenzo Tiberio”, University of Molise, Campobasso, Italy
4. Geriatric Unit, Faculty of Medicine and Psychology, “Sapienza” University of Rome, S. Andrea Hospital, Rome, Italy