[1] Hospices Civils Lyon, Ctr Hospitalier Lyon Sud, Pierre Benite, France
[2] Univ Hosp Lille, Lille, France
[3] Serv Chirurg Digestie & Cancerol, Hop Lariboisiere AP HP, Paris, France
[4] Pontchaillou Univ Hosp, Rennes, France
[5] Univ Hosp Archet, Nice, France
[6] CHU St Etienne, Saint Etienne, France
[7] Inst Cancerol Lorraine, Nancy, France
[8] Inst Canc Montpellier, Montpellier, France
[9] Inst Gustave Roussy, Villejuif, France
[10] Hop Louis Mourier, AP HP, Paris, France
[11] CHU Tronche, Grenoble, France
[12] Hop La Timone, AP HM, Marseille, France
[13] Inst Cancerol IOuest Paul Papin, Angers, France
[14] CHU Dijon, Dijon, France
[15] CHU, Clermont Ferrand, France
[16] Hopital St Antoine, AP HP, Paris, France
[17] CHU Poitiers, Poitiers, France
[18] CHU Reims, Reims, France
[19] Ctr Leon Berard, Lyon, France
[20] Hospices Civils Lyon, Ctr Hospitalier Lyon Sud, Pierre Benite, France