Funding for this research was provided by:
Fonds Wetenschappelijk Onderzoek (11ZI716N, G0E1614N)
Received: 30 April 2020
Accepted: 26 October 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: All procedures performed in this study have been approved by the ethical committee of the University of Antwerp (file number 2013–73) and the ethical committee of the University of Groningen (file number 6986/6986A).
: We declare we have no competing interests.