Received: 13 December 2019
Accepted: 3 September 2020
First Online: 11 September 2020
Ethics approval and consent to participate
: This study was approved by the Rennes University Hospital ethics committee on September 2, 2017 (Number 17.47). Written informed consent was obtained from each interviewee before the interview for all the information used for the study purposes.
: Not applicable.
: The authors declare that they have no competing interests.