Funding for this research was provided by:
Received: 1 July 2019
Accepted: 8 May 2020
First Online: 20 May 2020
Ethics approval and consent to participate
: The Medical Ethics Committee of the University Medical Center Utrecht declared that this study did not need approval according to the Dutch Law on Medical Research (protocol number 15–617/C). All participants have provided written informed consent prior to participation.
: Not applicable.
: The authors declare that they have no competing interests.