[1] Nuovo Regina Margherita Hosp, Gastroenterol & Endoscopy Unit, Rome, Italy
[2] Univ Foggia, Policlin Riuniti Hosp, Dept Med & Surg Sci, Gastroenterol & Endoscopy Unit, Viale L Pinto, I-71100 Foggia, Italy
[3] A Manzoni Hosp, Gastroenterol Unit, Lecce, Italy
[4] Riuniti Hosp, Gastroenterol Unit, Ancona, Italy
[5] Maggiore Hosp, Gastroenterol & Endoscopy Unit, Crema, CR, Italy
[6] CTO Hosp, Gastroenterol Unit, Iglesias, Italy
[7] CRO Hosp, Expt Oncol Gastroenterol Unit, Aviano, PD, Italy
[8] IRCCS CROB Hosp, Endoscopy Unit, Rionero In Vulture, PZ, Italy
[9] ASL Toscana Nord Ovest, San Luca Hosp, Gastroenterol Unit, Lucca, Italy
[10] San Giovanni di Dio Hosp, Gastroenterol Unit, Gorizia, Italy
[11] S Giovanni di Dio Hosp, Gastroenterol Unit, Crotone, Italy
[12] Univ Padua, Gastroenterol Unit, Padua, Italy
[13] SS Antonio Biagio & Cesare Arrigo Hosp, Gastroenterol Unit, Alessandria, Italy
[14] Santa Maria Hosp, Gastroenterol Unit, Terni, Italy
[15] San Martino Hosp, Gastroenterol & Endoscopy Unit, Belluno, Italy
[16] Civile Baggiovara Hosp, Gastroenterol Unit, Modena, Italy
[17] Santa Croce & Carle Hosp, Gastroenterol Unit, Cuneo, Italy
[18] L Curto Hosp, Gastroenterol Unit, Polla, SA, Italy
[19] SS Annunziata Hosp, Gastroenterol & Endoscopy Unit, Chieti, Italy
[20] Cattinara Hosp, Gastroenterol & Endoscopy Unit, Trieste, Italy
[21] ASL Toscana Ctr, Gastroenterol Unit, Pistoia, Italy
[22] Santa Maria della Misericordia Hosp, Gastroenterol Unit, Perugia, Italy
[23] San Carlo Hosp, Gastroenterol Unit, Melfi, PZ, Italy
[24] AOU Policlin Hosp, Gastroenterol Unit, Palermo, Italy
[25] Cannizzaro Hosp, Gastroenterol Unit, Catania, Italy
[26] Giovanni Paolo II IRCCS, Gastroenterol Unit, Bari, Italy
[27] ASST Sette Laghi Hosp, Gastroenterol Unit, Varese, Italy
[28] Brotzu ARNAS, Gastroenterol Unit, Cagliari, Italy
[29] Univ Foggia, Dept Med & Surg Sci, Hyg Unit, Foggia, Italy