Received: 20 February 2020
Accepted: 1 April 2020
First Online: 11 May 2020
Ethics approval and consent to participate
: The study received the approval of the medical ethical commission (Medisch Ethische Toetsingscommissie) and was classified under the protocol number 15-444/C approved on 29th July 2015.
: Not applicable.
: None of the co-authors declares to have competing interests.