Harper, Luke
Lefevre, Yan
Delforge, Xavier
Bourquard, David
Ferdynus, Cyril
Article History
Received: 17 August 2017
Accepted: 5 March 2018
First Online: 20 March 2018
Compliance with ethical standards
:
: This is an observational study for which no formal Ethics Comittee approval was necessary according to our National Laws on scientific research.
: All authors declare that they have no conflict of interest.