[1] Univ Salento, Dept Expt Med, Piazza Filippo Muratore 1, I-73100 Lecce, Italy
[2] HUB Hop Erasme, Dept Gastroenterol Digest Oncol & Hepatopancreatol, Brussels, Belgium
[3] Univ Verona, Pancreas Inst, Dept Med, Gastroenterol & Digest Endoscopy Unit, Verona, Italy
[4] AUSL Romagna, Forli Cesena Hosp, Gastroenterol & Digest Endoscopy Unit, I-47121 Forli Cesena, Italy
[5] AUSL Bologna, Osped Maggiore CA Pizzardi, Pathol Unit, Bologna, Italy
[6] Newcastle Upon Tyne Hosp NHS Fdn Trust, Dept Gastroenterol, Newcastle Upon Tyne, England
[7] IRCCS San Raffaele Sci Inst, Pancreatobiliary Endoscopy & Endosonog Div, Pancreas Translat & Clin Res Ctr, Milan, Italy
[8] Humanitas Pieve Emanuele Univ, Dept Biomed Sci, Milan, Pieve Emanuele, Italy
[9] IRCCS Humanitas Res Hosp, Milan, Italy
[10] Punjab Inst Liver & Biliary Sci, Dept Hepatol, Mohali, Punjab, India
[11] Konstantopoulio Patision Gen Hosp Nea Ionia, Dept Gastroenterol, Athens, Greece
[12] Newcastle Upon Tyne Hosp NHS Fdn Trust, Royal Victoria Infirm, Dept Cellular Pathol, Newcastle Upon Tyne, England
[13] Univ Hosp Santiago de Compostela, Hlth Res Inst Santiago de Compostela IDIS, IDIS, Santiago, Spain
[14] Hop PriveJean Mermoz, Hop pr Jean Mermoz, Lyon, France
[15] Attikon Univ Gen Hosp, Athens Med Sch, Dept Internal Med Propaedeut 2, Dept Propaedeut Internal Med 2,Hepatogastroenterol, Athens, Greece
[16] Iuliu Hatieganu Univ Med & Pharm, Dept Gastroenterol, Cluj Napoca, Romania
[17] Erasmus MC Univ Med Ctr, Dept Gastroenterol & Hepatol, Rotterdam, Netherlands
[18] Copenhagen Univ Hosp Herlev & Gentofte, Gastroenterol Unit, Herlev, Denmark
[19] Univ Copenhagen, Dept Clin Med, Copenhagen, Denmark
[20] Ulster Hosp, Northern Ireland Maxillofacial Serv, Belfast, Antrim, North Ireland
[21] Univ Bologna, Dept Med Sci & Surg, Bologna, Italy