Received: 29 August 2019
Accepted: 15 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: Appropriate review boards approved the investigation (CNIL approval 912309; CCTIRS approval 12336).
: Not applicable.
: AC received fees for lectures from C.R. Bard (Murray Hill, NJ, USA). The other authors declare that they have no competing interests.