[1] Univ Pisa, Dept Biol, Via Derna 1, I-56126 Pisa, Italy
[2] Szent Gyorgy Univ Teaching Hosp Fejer Cty, Szekesfehervar, Hungary
[3] Univ Vita Salute San Raffaele, IRCCS Osped San Raffaele Sci Inst, Div Expt Oncol, Gastroenterol & Gastrointestinal Endoscopy Unit, Milan, Italy
[4] Lithuanian Univ Hlth Sci, Dept Gastroenterol, Kaunas, Lithuania
[5] Lithuanian Univ Hlth Sci, Inst Digest Res, Kaunas, Lithuania
[6] Univ Pisa, Dept Translat Res & New Technol Med & Surg, Gen Surg Unit, Pisa, Italy
[7] Univ Padua, Dept Surg Oncol & Gastroenterol DiSCOG, Padua, Italy
[8] Univ Vita Salute San Raffaele, Pancreas Translat & Clin Res Ctr, IRCCS San Raffaele Sci Inst, Pancreatobiliary Endoscopy & Endosonog Div, Milan, Italy
[9] IRCCS Sci Inst, Div Gastroenterol, San Giovanni Rotondo, Italy
[10] IRCCS Sci Inst, Res Lab, San Giovanni Rotondo, Italy
[11] Reg Gen Hosp Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
[12] Charles Univ Prague, Fac Med Pilsen, Biomed Ctr, Plzen, Czech Republic
[13] Univ Med Ctr Hamburg Eppendorf, Dept Gen Visceral & Thorac Surg, Hamburg, Germany
[14] Univ Pisa, UO Chirurg Gen & Trapianti, Pisa, Italy
[15] Med Univ Lodz, Dept Digest Tract Dis, Lodz, Poland
[16] Univ Pecs, Med Sch, Inst Translat Med, Pecs, Hungary
[17] Univ Szeged, Dept Med 1, Szeged, Hungary
[18] Heidelberg Univ, Dept Gen Surg, Heidelberg, Germany
[19] German Canc Res Ctr, Genom Epidemiol Grp, Heidelberg, Germany
[20] First Med Fac, Inst Biol & Med Genet, Prague, Czech Republic
[21] Czech Acad Sci, Inst Expt Med, Prague, Czech Republic
[22] Natl & Kapodistrian Univ Athens, Athens Med Sch, Dept Propaedeut Surg 1, Colorectal Unit, Athens, Greece
[23] Sapienza Univ Rome, St Andrea Hosp, Fac Med & Psychol, Rome, Italy
[24] Humanitas Res Hosp, Div Gastroenterol, Digest Endoscopy Unit, Rozzano, Italy
[25] Charles Univ Prague, Fac Hosp Kralovske Vinohrady, Dept Surg, Prague, Czech Republic
[26] Charles Univ Prague, Fac Med 3, Prague, Czech Republic
[27] San Carlo Hosp, Gastroenterol, Potenza, Italy
[28] Univ & Hosp Trust Verona, ARC NET Ctr Appl Res Canc, Verona, Italy
[29] Palacky Univ Olomouc, Fac Med & Dent, Dept Surg 1, Olomouc, Czech Republic
[30] Univ Hosp Olomouc, Olomouc, Czech Republic
[31] Natl & Kapodistrian Univ Athens, Med Sch, Dept Basic Med Sci, Lab Biol, Athens, Greece
[32] Univ Verona, Dept Diagnost & Publ Hlth, Sect Pathol, Verona, Italy
[33] German Canc Res Ctr, Div Clin Epidemiol & Aging Res, Heidelberg, Germany
[34] German Canc Res Ctr, Div Prevent Oncol, Heidelberg, Germany
[35] Natl Ctr Tumor Dis NCT, Heidelberg, Germany
[36] German Canc Res Ctr, German Canc Consortium DKTK, Heidelberg, Germany
[37] Fundeni Clin Inst, Ctr Gastroenterol, Bucharest, Romania
[38] Inst Hematol & Transfus Med, Dept Hematol, Warsaw, Poland