[1] Univ Pisa, Dept Biol, Via Luca Ghini, I-1356126 Pisa, Italy
[2] Fdn IRCCS Casa Sollievo Sofferenza Hosp, Div Gastroenterol & Res Lab, San Giovanni Rotondo, Italy
[3] IRCCS San Raffaele Sci Inst, Pancreatobiliary Endoscopy & Endosonog Div, Pancreas Translat & Clin Res Ctr, Milan, Italy
[4] Azienda Osped Univ Meyer, Childrens Hosp, Transfus Serv, Florence, Italy
[5] Charles Univ Prague, Inst Biol & Med Genet, Med Fac 1, Prague, Czech Republic
[6] Gen Univ Hosp, Prague, Czech Republic
[7] Czech Acad Sci, Inst Expt Med, Prague, Czech Republic
[8] Pisa Univ Hosp, Div Gen & Transplant Surg, Pisa, Italy
[9] Univ Vita Salute San Raffaele, IRCCS San Raffaele Sci Inst, Gastroenterol & Gastrointestinal Endoscopy Unit, Milan, Italy
[10] Sapienza Univ Rome, St Andrea Univ Hosp, Fac Med & Psychol, Digest & Liver Dis Unit, Rome, Italy
[11] Univ Pisa, Dept Translat Res & New Technol Med & Surg, Gen Surg Unit, Pisa, Italy
[12] Univ Padua, Clin Chirurg 1, Dept DISCOG, Padua, Italy
[13] San Carlo Hosp, Gastroenterol Unit, Potenza, Italy
[14] Univ & Hosp Trust Verona, Ctr Appl Res Canc, ARC NET, Verona, Italy
[15] IRCCS Humanitas Res Hosp, Dept Gastroenterol, Endoscop Unit, Milan, Italy
[16] Univ Hosp Olomouc, Dept Surg 1, Olomouc, Czech Republic
[17] Charles Univ Prague, Fac Med Pilsen, Biomed Ctr, Plzen, Czech Republic
[18] German Canc Res Ctr, Div Clin Epidemiol & Aging Res, Heidelberg, Germany
[19] Univ Hosp Heidelberg, Dept Gen Visceral & Transplantat Surg, Heidelberg, Germany
[20] Univ Med Hamburg Eppendorf, Dept Gen Visceral & Thorac Surg, Hamburg, Germany
[21] Natl & Kapodistrian Univ Athens, Med Sch, Lab Biol, Athens, Greece
[22] Univ Pecs, Med Sch, Inst Translat Med, Pecs, Hungary
[23] Pal Heim Natl Inst Pediat, Budapest, Hungary
[24] Lithuanian Univ Hlth Sci, Gastroenterol Dept, Kaunas, Lithuania
[25] Lithuanian Univ Hlth Sci, Inst Digest Res, Kaunas, Lithuania
[26] Univ Amsterdam, Amsterdam Univ Med Ctr, Canc Ctr Amsterdam, Lab Expt Oncol & Radiobiol, Amsterdam, Netherlands
[27] Natl Inst Publ Hlth & Environm RIVM, Dept Determinants Chron Dis DCD, Bilthoven, Netherlands
[28] Univ Utrecht, Utrecht, Netherlands
[29] Erasmus Univ, Erasmus Med Ctr, Dept Surg, Rotterdam, Netherlands
[30] Med Univ Warsaw, Dept Hematol Transplantat & Internal Med, Warsaw, Poland
[31] Med Univ Lodz, Dept Digest Tract Dis, Lodz, Poland
[32] Univ Liverpool, Dept Mol & Clin Canc Med, Liverpool, Merseyside, England
[33] Univ Siena, Dept Med Biotechnol, Siena, Italy
[34] Pisa Univ Hosp, Unit Expt Surg Pathol, Dept Surg, Pisa, Italy
[35] Univ Padua, Clin Chirurg 3, Dept DISCOG, Padua, Italy
[36] Palacky Univ Olomouc, Fac Med & Dent, Dept Oncol, Olomouc, Czech Republic
[37] German Canc Res Ctr, Genom Epidemiol Res Grp, Heidelberg, Germany
[38] Heidelberg Univ, Med Fac Heidelberg, Heidelberg, Germany
[39] German Canc Res Ctr, German Canc Consortium DKTK, Heidelberg, Germany
[40] Natl & Kapodistrian Univ Athens, Propaedeut Univ Surg Clin 1, Sch Med, Hippocratio Gen Hosp, Athens, Greece
[41] Fundeni Clin Inst, Bucharest, Romania
[42] Amsterdam Univ Med Ctr, Canc Ctr Amsterdam, Dept Surg, Amsterdam, Netherlands
[43] Charles Univ Prague, Univ Hosp Kralovske Vinohrady, Fac Med 3, Dept Surg, Prague, Czech Republic
[44] German Canc Res Ctr, Div Prevent Oncol, Heidelberg, Germany
[45] Natl Ctr Tumor Dis NCT, Heidelberg, Germany
[46] Fdn IRCCS Casa Sollievo Sofferenza Hosp, Dept Oncol, San Giovanni Rotondo, Italy
[47] Univ Szeged, Dept Med, Ctr Translat Med, Szeged, Hungary
[48] Fdn IRCCS Casa Sollievo Sofferenza Hosp, Dept Surg Sci, San Giovanni Rotondo, Italy
[49] Univ Padua, Dept DIMED, Padua, Italy