Received: 12 December 2018
Accepted: 18 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: This study was approved by Geneva IRB. Protocol no. 2016–01474 Swiss Ethic Committees on research involving humans. The data used in this study was anonymised before its use.
: Not applicable.
: Pr Sophie Pautex declares to be a member of the editorial board. The other authors declare no competing interests.