[1] ASST Grande Osped Metropolitano Niguarda, Oncol Dept, Milan, Italy
[2] Vall dHebron Univ Hosp, Dept Med Oncol, Barcelona, Spain
[3] Vall dHebron Inst Oncol VHIO, Oncol Data Sci Grp, Barcelona, Spain
[4] Vall dHebron Univ Hosp, Gastrointestinal Unit, Med Oncol, Barcelona, Spain
[5] Vall dHebron Univ Hosp, Dept Oncol, Barcelona, Spain
[6] Vall dHebron Univ Hosp, Colon Canc Dept, Barcelona, Spain