[1] Univ Milano Bicocca, Sch Med, San Gerardo Hosp, Div Gastroenterol, Monza, Italy
[2] Alma Mater Studiorum Univ Bologna, S Orsola Malpighi Univ Hosp, NET Team Bologna ENETS Ctr Excellence, Bologna, Italy
[3] Fdn IRCCS Ist Tumori Milano, ENETS Ctr Excellence, Dept Med Oncol, Milan, Italy
[4] San Martino Univ Hosp, Endocrinol Dept DiMi, Genoa, Italy
[5] Univ Sapienza Rome, Dept Expt Med, Rome, Italy
[6] St Andrea Univ Hosp, ENETS Ctr Excellence, Digest Dis Unit, Rome, Italy
[7] Humanitas Res Hosp IRCCS, Humanitas Canc Ctr, UO Oncol Med & Ematol, Milan, Italy
[8] Univ Vita Salute San Raffaele, San Raffaele Sci Inst, Pancreas Translat & Clin Res Ctr, Pancreat Surg Unit, Milan, Italy
[9] Federico II Univ Naples, Dept Clin Med & Surg, Naples, Italy
[10] Comprensorio Sanit Bolzano, UO Oncol Med, Bolzano, Italy
[11] Univ Milan, Fdn IRCCS Ca Granda Osped Maggiore Policlin, Gastroenterol & Endoscopy Unit, Milan, Italy
[12] Sapienza Univ Rome, Dept Med Surg Sci & Translat Med, Rome, Italy