Funding for this research was provided by:
Direction Générale de l’offre de Soins (PREPS_15-000198)
Received: 29 June 2019
Accepted: 20 March 2020
First Online: 31 March 2020
Ethics approval and consent to participate
: This research has been approved by the Commission Nationale Informatique et Liberté (Reference number CNIL/DE-2014-134). Since the database is anonymous, obtaining consent to participate is not applicable.
: Not applicable.
: The authors declare that they have no competing interests.