1 Gastroenterology Operative Unit, Azienda Ospedaliera San Camillo-Forlanini FR, Rome, Italy.
2 Gastroenterology and Digestive Endoscopy, Nuovo Regina Margherita Hospital, Rome, Italy.
3 Gastroenterology and Digestive Endoscopy, Academic Hospital Cattinara, Trieste, Italy.
4 Department of Internal Medicine ASST Lecco, Lecco, Italy.
5 Department of Oncological Gastroenterology, S.O.C. Gastroenterologia Oncologica Sperimentale, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano, PN, Italy. Electronic address: [email protected].
6 Department of Medicine, Vittorio Emanuele III Hospital, Salemi, Trapani, Italy.
7 Gastroenterology Unit, AULSS 3 Serenissima, Venice, Italy.
8 Gastrointestinal Endoscopy Unit, Ospedale SS Cosma e Damiano, Pescia, Italy.
9 Gastroenterology Unit, S. Maria delle Croci Hospital, Ravenna, Italy.
10 Gastrointestinal Unit, G. Brotzu Hospital, Cagliari, Italy.