Funding for this research was provided by:
French Ministry for Solidarity and Health (PHRCN-11-11-05)
Text and Data Mining valid from 2019-04-11
Received: 14 October 2018
Accepted: 20 February 2019
First Online: 11 April 2019
Ethics approval and consent to participate
: The study received specific agreements from an independent ethics committee, the “Comité de Protection des Personnes” (CPP) of Nancy, agreement n° 2011/56 on the date of 7 May 2012, and has therefore been performed in accordance with the ethical standards laid down in an appropriate version of the Helsinki Declaration of 1975, as revised in 2000. All persons gave their informed written consent prior to their inclusion to the study.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.