Received: 13 June 2018
Accepted: 17 October 2018
First Online: 25 October 2018
: All participants were informed of the survey’s objectives. This study received the approbation of the ethic committee of INSERM (Institut national de la Santé et de la Recherche Médicale. CEEIIRB00003888) on July 5, 2016.
: Not applicable.
: The authors declare that they have no competing interests.
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