Received: 20 July 2020
Accepted: 21 September 2020
First Online: 3 October 2020
Ethics approval and consent to participate
: Approval for this study was granted by the Human Research Ethics Committee of the Canton Vaud (<i>protocol #2016–00768</i>) (Switzerland) and by the Ethic Committee from the University of Liège (Belgium). Written informed consent was obtained from all participants and all methods were carried out in accordance with the recommendations of the Human Research Ethics Committee of the Canton Vaud and the Declaration of Helsinki.
: The authors declare that they have no competing interests.