1. Department of Radiation Oncology, Hopital Universitaire de Bruxelles (H.U.B.), Institut Jules Bordet, Université Libre de Bruxelles (ULB), Rue Meylenmeersch 90, 1070 Brussels, Belgium
2. Department of Radiation Oncology, UNIL-CHUV, Rue du Bugnon 46, 1011 Lausanne, Switzerland
3. Department of Radiation Oncology, AZ Turnhout, Rubensstraat 166, 2300 Turnhout, Belgium
4. Laboratory of Experimental Gastroenterology, Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium
5. Department of Gastroenterology, Hepatology and Digestive Oncology, Hopital Universitaire de Bruxelles H.U.B. CUB Hopital Erasme, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070 Brussels, Belgium
6. Department of Hepato-Biliary-Pancreatic Surgery, Hopital Universitaire de Bruxelles H.U.B. CUB Hopital Erasme, Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium