van den Heuvel, J. F. M.
Teunis, C. J.
Franx, A.
Crombag, N. M. T. H.
Bekker, M. N.
Funding for this research was provided by:
Stichting Achmea Gezondsheidszorg (R3679)
Article History
Received: 29 November 2018
Accepted: 29 January 2020
First Online: 4 February 2020
Ethics approval and consent to participate
: This study was exempted from approval of the Medical Research Ethics Committee of the University Medical Center in Utrecht (reference number 16–203), as the Committee confirmed that the Dutch Medical Research Involving Human Subjects Act (WMO) did not apply to this study.
: n/a
: The authors declare that they have no competing interests.