1. Rheumatology Unit, University of Verona, Piazzale A Scuro, Policlinico GB Rossi, Verona 37134, Italy
2. Rheumatology Unit, University of Verona, Verona, Italy
3. Department of Statistics and Quantitative Methods, National Centre for Healthcare Research and Pharmacoepidemiology, University of Milano–Bicocca, Milan, Italy
4. Unit of Biostatistics, Epidemiology, and Public Health, Department of Statistics and Quantitative Methods, University of Milano–Bicocca, Milan, Italy
5. Department of Biomedicine and Prevention, University of Rome ‘Tor Vergata’, Rome, Italy
6. Local Health Unit Umbria, Perugia, Italy
7. Department of Pharmacology, School of Medicine, University of Messina, Messina, Italy
8. Italian Bone Disease Research Foundation, Florence, Italy
9. Rheumatology Unit, Department of Medicine, Surgery and Neurosciences, Azienda Ospedaliero-Universitaria Senese, University of Siena, Siena, Italy
10. Department of Medicine, Surgery and Neuroscience, Policlinico Le Scotte, University of Siena, Siena, Italy
11. Department of Medical and Surgical Specialties and Dentistry, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
12. Department of Experimental Medicine, Sapienza University of Rome, Viale del Policlinico, Rome, Italy
13. AMICI Onlus, Associazione Nazionale per le Malattie Infiammatorie Croniche dell’Intestino, Milan, Italy
14. Italian Society of General Medicine and Primary Care, Florence, Italy
15. Department of Movement, Human and Health Sciences, Foro Italico University, Rome, Italy
16. Coordinamento Nazionale delle Associazioni dei Malati Cronici e rari di Cittadinanzattiva, Rome, Italy
17. Department of Clinical Sciences and Translational Medicine, University of Rome ‘Tor Vergata’, Rome, Italy
18. Department of Orthopedics and Traumatology, ‘Policlinico Tor Vergata’ Foundation, Rome, Italy