1. Rheumatology Unit, S. Giovanni di Dio Hospital, Azienda USL-Toscana Centro, Florence, Italy.
2. Immunology and Allergology Laboratory, S. Giovanni di Dio Hospital, Azienda USL-Toscana Centro, Florence, Italy.
3. Rheumatology Unit, P. Dettori Hospital, AST Sardegna, Tempio Pausania, Italy.
4. Gastroenterology Unit, Internal Medicine Department, ASST Fatebenefratelli-Sacco, Milan University School of Medicine, Milan, Italy.
5. Rheumatology Unit, Department of Internal Medicine, ASST Fatebenefratelli-Sacco, Milan University School of Medicine, Milan, Italy. piercarlo.sarziputtini@gmail.com