1. Department of Medicine, Rheumatology Unit, University of Udine, Udine, Italy
2. Rheumatology Unit, Azienda Policlinico di Modena, University of Modena and Reggio Emilia, Modena, Italy
3. Reumatologia, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza University of Rome, Rome, Italy
4. Respiratory Unit, Department of Health Sciences, University of Milan, Milan, Italy
5. Rheumatology Unit, Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy
6. Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza, Potenza, Italy
7. Rheumatology Unit, Department of Medical Sciences and Public Health, AOU and University of Cagliari, Cagliari, Italy
8. Department of Medicine, University of Verona, Rheumatology Unit, Azienda Ospedaliera Universitaria Integrata di Verona, Policlinico Borgo Roma, Verona, Italy
9. Rheumatology Unit, Department of Experimental and Internal Medicine, University of Messina, Messina, Italy