[1] IRCCS, European Inst Oncol, Div Gastrointestinal Med Oncol & Neuroendocrine T, IEO, Milan, Italy
[2] Univ Hosp Leipzig, Univ Canc Ctr Leipzig UCCL, Leipzig, Germany
[3] European Inst Oncol, Milan, Italy
[4] Univ Milano Bicocca, Dept Stat & Quantitat Methods, Milan, Italy
[5] Univ Pavia, Mol Med Dept, Pavia, Italy
[6] IRCCS, European Inst Oncol, Div New Drugs & Early Drug Dev Innovat Therapies, Milan, Italy
[7] Indiana Univ Northwest, Gary, IN USA
[8] Med Univ South Carolina, Charleston, SC USA