Article History
Received: 6 March 2019
Accepted: 22 November 2019
First Online: 9 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study (retrospective) formal consent is not required.
: This is a retrospective study and according to French legislation on clinical trials at the time of the study, there was no need for patient consent. The data used were anonymized and collected from the APHM computer file which is declared to the Commission Nationale Informatique et Liberté (French National Commission for Data Protection).