Received: 1 February 2019
Accepted: 26 July 2019
First Online: 7 August 2019
Ethics approval and consent to participate
: All patients or their legal guardians gave their consent for this program according to French legislation and Hôpital Necker-Enfants Malades procedures.
: All patients and their parents or legal guardians gave their written or oral agreement for publication according to French legislation.
: The authors declare that they have no competing interests.