Received: 30 November 2020
Accepted: 25 February 2021
First Online: 15 March 2021
: This study was approved by the French Ethics Committee (“Comité de Protection des Personnes”) and the Institutional Reviews Boards of participating centers. All patients have given their written informed consent. This trial was registered at ExternalRef removed (NCT01956552). The ESOPE study was approved by the Institut Curie Review Board and Ethics Committee (reference number: 2010-A00781–56). Other participating centers were as follows: Gustave Roussy Institute, Villejuif, France; Saint-Louis Hospital, Paris, France; René Gauducheau Cancer Center, Saint-Herblain, France; Léon Bérard Cancer Center, Lyon, France. All institutional review boards approved the study. The research was conducted in strict compliance with the Helsinki Declaration.
: Not applicable.
: The authors declare that they have no competing interests.