[1] Sapienza Univ Rome, St Andrea Hosp, ENETS Ctr Excellence, Digest & Liver Diseaes, Rome, Italy
[2] ENETS Ctr Excellence IEO, Div Gastrointestinal Med Oncol & Neuroendocrine, Milan, Italy
[3] Fdn IRCCS, ENETS Ctr Excellence, Dept Med Oncol, Ist Tumori Milano, Milan, Italy
[4] Univ Hosp Modena, Dept Haematol & Oncol, Div Oncol, Modena, Italy
[5] Ist Sci Romagnolo Studio & Cura Tumori IRST IRCCS, Osteoncol & Rare Tumors Ctr, Meldola, Italy
[6] S Orsola Malpighi Univ Hosp, Dept Expt Diagnost & Specialty Med, Bologna, Italy
[7] Univ Pisana, Azienda Osped, Dept Oncol, Pisa, Italy
[8] Univ Pisa, Ist Toscano Tumori, Santa Chiara Hosp, Pisa, Italy
[9] Vita & Salute Univ, Div Pancreat Surg, Pancreas Translat & Clin Res Ctr, San Raffaele Sci Inst, Milan, Italy
[10] Univ Palermo, Dept Surg & Oncol Sci, Palermo, Italy
[11] Struttura Oncol Policlin Monza, Monza, Italy
[12] Univ Cattolica Sacro Cuore, Med Oncol, Rome, Italy