Toonen, Roelof B. http://orcid.org/0000-0002-3214-3749
Wardenaar, Klaas J.
Bos, Elisabeth H.
van Ockenburg, Sonja L.
de Jonge, Peter
Funding for this research was provided by:
ZonMw (91812607)
Universitair Medisch Centrum Groningen
Article History
Received: 1 June 2017
Accepted: 27 February 2018
First Online: 21 March 2018
Ethics approval and consent to participate
: This study was approved by the Medical Ethics Committee of the University Medical Center Groningen. The participants provided written informed consent before enrollment.
: Not applicable
: The authors declare that they have no competing interests.
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