Sage, P.-Y.
Trilling, B.
Waroquet, P.-A.
Voirin, D.
Girard, E.
Faucheron, J.-L.
Article History
Received: 26 December 2017
Accepted: 18 June 2018
First Online: 19 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study has been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments.
: For this type of study formal consent is not required.