1. Department of Clinical, Internist, Anesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, 00185 Rome, Italy
2. Internal Medicine and Rheumatology Unit, University Hospital of Parma, 43126 Parma, Italy
3. Rheumatology Unit, Guglielmo da Saliceto Hospital, 29121 Piacenza, Italy
4. Internal Medicine Unit, Imperia Hospital, 18100 Imperia, Italy
5. Rheumatology Unit, ASL Novara, 28100 Novara, Italy
6. Rheumatology Department, Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, 10126 Torino, Italy
7. Rheumatology Unit, Azienda ULSS 6 Euganea, 35131 Padova, Italy
8. Rheumatology Unit, Azienda USL of Modena and AOU Policlinico of Modena, 41100 Modena, Italy
9. Internal Medicine Unit, Augusto Murri Hospital, 63900 Fermo, Italy
10. Internal Medicine Unit, Civitanova Marche Hospital, 62012 Civitanova Marche, Italy
11. Rheumatology Unit, Internal Medicine Division, Department of Medicine and Oncology, Santa Maria della Scaletta Hospital, 40026 Imola, Italy
12. Rheumatology Unit, Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy
13. Rheumatology Unit, ARNAS Garibaldi, 95124 Catania, Italy
14. Rheumatology Unit, Santa Chiara Hospital APSS—Trento, 38122 Trento, Italy
15. Rheumatology Unit, Nuovo Regina Margherita Hospital, 00154 Roma, Italy
16. Division of Rheumatology, Department of Medical Specialties, Azienda Sanitaria Locale 3 Genovese, 16132 Genova, Italy
17. Rheumatology Unit, ASL CN1, 12100 Cuneo, Italy
18. Rheumatology Unit, Policlinico San Marco Hospital, 95121 Catania, Italy
19. Rheumatology Unit, AUSL of Bologna—Policlinico Sant’Orsola—AOU—IRCCS of Bologna, 40138 Bologna, Italy
20. Unit of Rheumatology, ASL VC Sant’ Andrea Hospital, 13100 Vercelli, Italy
21. Unit of Rheumatology, IRCCS Sacro Cuore Don Calabria Hospital, 37024 Negrar di Valpolicella, Italy
22. Internal Medicine and Rheumatology Unit, AUSL della Romagna—Rimini, 47924 Rimini, Italy
23. Rheumatology Unit, G.B. Morgagni—L. Pierantoni Hospital, 47121 Forlì, Italy
24. Rheumatology Unit, Division of Internal Medicine, Azienda Ospedaliera Papardo, 98158 Messina, Italy
25. Rheumatology Unit, University of Modena and Reggio Emilia, 41125 Modena, Italy
26. Medical Oncology Unit, Azienda Ospedaliera Papardo, 98158 Messina, Italy
27. Medicine Unit, Milano-Bicocca University, 20126 Milano, Italy
28. Unit of Diagnostic and Interventional Radiology, Santa Corona Hospital, 17027 Pietra Ligure, Italy