[1] Lausanne Univ Hosp CHUV, Dept Visceral Surg, Lausanne, Switzerland
[2] Univ Lausanne UNIL, Fac Biol & Med, Lausanne, Switzerland
[3] CHU Lille, Dept Digest & Oncol Surg, Lille, France
[4] Lausanne Univ Hosp CHUV, Dept Radiat Oncol, Lausanne, Switzerland
[5] Univ Lille, CHU Lille, INSERM, CNRS,UMR9020,U1277,CANTHER,Canc Heterogene Plasti, Lille, France