1. Department of Medicine and Surgery, University of Parma, Parma, Italy
2. Rheumatology Unit, AUSL Piacenza, Piacenza, Italy
3. Rheumatology Unit, University of Modena and Reggio Emilia, Modena, Italy
4. Clinical Immunology, Allergy and Advanced Biotechnologies Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
5. Respiratory Disease Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
6. School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
7. Rheumatology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Reggio Emilia, Italy
8. Faculty of Medicine and Surgery, University of Modena and Reggio Emilia, Modena, Italy