Funding for this research was provided by:
Received: 25 October 2019
Accepted: 31 March 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: Authorization to access the different databases used for the purpose of this research was obtained from the French data protection authority (CNIL) in February 2015 (Decision DE-2015-8). No informed consent was required from patients as this research did not involve human and/or animal experimentation and as the analyzed data was entirely anonymized.
: Not applicable.
: The authors declare that they have no competing interests.