1. Division of Internal Medicine and Digestive Physiopathology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
2. Department of Medical and Surgical Sciences, University of Bologna, 40138 Bologna, Italy
3. Gastroenterology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
4. Gastroenterology, Department of Public Health, University Federico II of Naples, 80131 Naples, Italy
5. CEMAD—IBD UNIT—Unità Operativa Complessa di Medicina Interna e Gastroenterologia, Dipartimento di Scienze Gastroenterologiche, Endocrino-Metaboliche e Nefro-Urologiche, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy