Text and Data Mining valid from 2018-02-12
Received: 6 November 2017
Accepted: 31 January 2018
First Online: 12 February 2018
Ethics approval and consent to participate
: At the time of the study, in France, no approval by an ethics committee was required for retrospective studies. All patients gave written informed consent for the scientific use of their data.
: All patients included gave written informed consent that their data could be used for scientific purposes.
: The authors declare that they have no competing interests.
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