Funding for this research was provided by:
Ligue Contre le Cancer
Received: 22 January 2019
Accepted: 28 February 2019
First Online: 18 March 2019
Ethics approval and consent to participate
: All patients had given written informed consent. An institutional review board had approved the study, which was conducted in accordance with the declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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