Received: 19 November 2019
Accepted: 15 April 2020
First Online: 22 April 2020
Ethics approval and consent to participate
: All participants gave written informed consent before being included in the study. Ethical approval was obtained from the Ethics Committees of Hasselt University and Jessa Hospital, Belgium (approval number 15.128/REVA15.11).
: Written consent for publication was obtained from the person in the pictures.
: The authors declare that they have no competing interests.