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Article History

Received: 17 May 2018

Accepted: 8 October 2018

First Online: 16 October 2018

Ethics approval and consent to participate

: This project was approved by the “Sud-Ouest et Outre-Mer I” March 2014 ethics committee. All the patients were informed of the study and voluntarily agreed to participate. All the patients who agreed to participate provided written consent.All these clinical site are covered within the ethical approval: The CHU and the University of Toulouse, Toulouse, France; Jean Mermoz Hospital, Lyon, France; Trocadéro Clinic, Paris, France; The Department of Pathology, Beaujon Hospital and Paris 7 University, Clichy, France, The Biobank, Bichat Hospital and Paris 7 University, Paris, France; The Cancer Institute and the University of Montpellier, Montpellier, France; ⁷The Léon Bérard Cancer Center, Lyon, France; The Department of Digestive Surgery, the CHU and the University of Lille, Lille, France; The CHU and the University of Montpellier, Montpellier, France. La Timone Hospital and the University of Marseille, Marseille, France; The CHU and the University of Bordeaux, Bordeaux, France; Saint Louis Hospital and Paris 7 Diderot University, Paris, France; The CHU and the University of Nice, Nice, France; Pau Hospital, Pau, France; The CHU Nord Hospital and the University of Marseille, Marseille, France; INSERM UMR866 and the University of Dijon, Dijon, France; INSERM UMR1027 and the University of Toulouse, Toulouse France.

: Not applicable.

: The authors declare that they have no competing interests.

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