[1] CHU Bordeaux, Radiat Oncol, Bordeaux, France
[2] Montpellier Canc Inst ICM, Radiat Oncol, Montpellier, France
[3] Univ Burgundy, Federat Francophone Cancerol Digest, Biostat, Dijon, France
[4] Antoine Lacassagne Canc Ctr, Radiat Oncol, Nice, France
[5] Sorbonne Univ, Tenon Univ Hosp, AP HP, Radiat Oncol, Paris, France
[6] Leon Berard Canc Ctr, Radiotherapy, Lyon, France
[7] Tivoli Clin, Radiotherapy, Bordeaux, France
[8] St Joseph Hosp Grp, Oncol, Paris, France
[9] Azureen Canc Ctr, Radiotherapy, Mougins, France
[10] Univ Paris Cite, INSERM, U1160, Paris, France
[11] St Louis Hosp, AP HP, Radiotherapy, Paris, France
[12] Hosp Vendee, Med Oncol, La Roche Sur Yon, France
[13] Daniel Hollard Inst, Radiotherapy, Grenoble, France
[14] Rennes Univ Hosp, Gastroenterol, Rennes, France
[15] Rennes 1 Univ, INSERM, U1242, COSS, Rennes, France
[16] Univ Poitiers Hosp, Hepatol & Gastroenterol, Poitiers, France
[17] Univ Claude Bernard Lyon 1, Radiat Oncol, Lyon, France
[18] Canc Inst, Radiat Oncol, Paris, France
[19] Catalan Oncol Ctr, Med Oncol, Perpignan, France
[20] Univ Bordeaux, BRIC BoRdeaux Inst onCol, UMR1312, INSERM, Bordeaux, France