Received: 21 March 2019
Accepted: 13 August 2019
First Online: 22 August 2019
Ethics approval and consent to participate
: The project was carried out in accordance with the French legislation of reference framing retrospective non-interventional studies (MR-003, Loi Jardé).
: Information was given to patients to enable them to oppose the use of their data.
: The authors declare that they have no competing interests.