[1] Netherlands Canc Inst, Dept Gastrointestinal Oncol, Amsterdam, Netherlands
[2] Res Netherlands Comprehens Canc Org, Utrecht, Netherlands
[3] Netherlands Canc Inst, Surg Oncol, Amsterdam, Netherlands
[4] Antoni van Leeuwenhoek Hosp, Med Oncol, Netherlands Canc Inst, Amsterdam, Netherlands
[5] Antoni van Leeuwenhoek Hosp, Psychosocial Res & Epidemiol Dept, Netherlands Canc Inst, Amsterdam, Netherlands