1. Rheumatology Unit, Department of Internal Medicine, University of Messina, Messina
2. Department of Clinical Neurosciences, Hermanas Hospitalarias, Villa San Benedetto Menni Hospital, Albese con Cassano, Humanitas Clinical and Research Center, Como, Milan, Rozzano
3. Rheumatology Clinic, Department of Clinical and Molecular Sciences, Università Politecnica delle Marche, Jesi, Ancona
4. Rheumatology Unit, AOU Pisana, Pisa
5. Rheumatology, Department of Medical Sciences, University of Ferrara and Azienda Ospedaliera-Universitaria S. Anna di Ferrara
6. Rheumatology Unit, Department of Medical Sciences, Surgery and Neurosciences, University of Siena, Siena
7. Rheumatology Unit, Department of Internal Medicine, Anesthesiological and Cardiovascular Sciences, Policlinico Umberto I, Sapienza University of Rome
8. Internal Medicine and Rheumatology Unit, Azienda Ospedaliero-Universitaria di Parma, Parma
9. Rheumatology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome
10. Unit of Immunology, Rheumatology, Allergy and Rare Diseases (UnIRAR), IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan
11. Rheumatology Unit, Internal Medicine Department, ASST Settelaghi, Varese
12. Unit of Rheumatology, Department of Medical, Surgery and Health Sciences, ASUGI and Clinical University, University of Trieste
13. Clinical Unit of Rheumatology, School of Medicine, University of L'Aquila
14. Division of Rheumatology AOUC, Department of Experimental and Clinical Medicine, University of Florence, Florence
15. Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo
16. Integrated Reference Center of Rheumatology, Scicli Hospital, Ragusa
17. Rheumatology Unit, Department of Medicine, University of Perugia, Perugia
18. University of Modena and Reggio Emilia, Azienda USL-IRCCS di Reggio Emilia
19. Rheumatology Unit, S. Maria Hospital—USL, IRCCS Institute, Reggio Emilia
20. Rheumatology Unit, Azienda USL di Modena
21. Rheumatology Unit, Department of Emergency Surgery and Organ Transplantations, University of Bari, Bari
22. Rheumatology Unit, Internal Medicine Department, ASST Fatebenefratelli-Sacco, Milan University School of Medicine, Milan
23. Research Laboratory and Division of Clinical Rheumatology, Department of Internal Medicine, University of Genoa, IRCCS San Martino, Genova
24. Division of Rheumatology, ASST Gaetano Pini-CTO, Milano, Italy