[1] Hosp St Antoine, Paris, France
[2] Hosp Foch, Suresnes, France
[3] Inst Mutualiste Montsouris, Paris, France
[4] Hop Prive Jean Mermoz, GI Oncol, Lyon, France
[5] Hop La Pitie Salpetriere, GI Oncol, Paris, France
[6] Gercor, Alexandra, Paris, France
[7] Hop Europeen Georges Pompidou, Paris, France