Received: 16 January 2017
Accepted: 21 January 2018
First Online: 30 January 2018
Ethics approval and consent to participate
: The MREC UMC Utrecht confirmed that the Medical Research Involving Human Subject Acts (WMO) does not apply to the study and that therefore an official approval of this study is not required. All participants gave their consent for participation in the observations and interviews and for recording the interviews. The data was coded and processed anonymously.
: Not applicable
: The authors declare that they have no competing interests.
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