Kraft, Maren
Arts, Koos
Traag, Tanja
Otten, Ferdy
Bosma, Hans
Article History
Received: 18 April 2016
Revised: 23 October 2016
Accepted: 17 November 2016
First Online: 30 November 2016
Compliance with ethical standards
:
: Authors MK, HB, TT, FO, and KA declare that they have no conflict of interest.
: Ethical approval for this study is not required in the Netherlands since participants were neither subjected to interventions nor were they imposed by a code of conduct which would be protected by the Dutch Medical Research on Human Act (WMO). The Code of Conduct for health research with data (Code Goed Gedrag) was followed; participation was voluntary and did not bear consequences. Data is treaded confidentially and individuals are not traceable from published data.