Received: 29 June 2018
Accepted: 13 August 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: This work was approved by our institutional Ethics Committee after declaration to the <i>Département de la Recherche Clinique et du Développement</i>, and informed consent to participate was obtained from the parents of underage patients or from adult patients.
: All participants, and their parents for children patients, gave consent for publication.
: The authors declare that they have no competing interests.