de Jonge, J.
Bolmers, M. D. M.
Musters, G. D.
van Rossem, C. C.
Bemelman, W. A.
van Geloven, A. A. W.
Article History
Accepted: 25 April 2019
First Online: 7 June 2019
Compliance with ethical standards
: Dutch regulations did not require review by the medical ethical board or written informed consent.
: The authors declare that they have no conflicts of interest.
: The medical ethics committee approved the original study and no informed consent was necessary because of the observational design. Dutch regulations did not require review by the medical ethical board or written informed consent.