Funding for this research was provided by:
Received: 12 March 2019
Accepted: 30 August 2019
First Online: 6 September 2019
Ethics approval and consent to participate
: All interview participants signed written consent. Ethics approval for this study is not necessary under Dutch law according to the Medical Research Involving Human Subjects act (WMO) because interview questions were not incriminating, intimate or radical [CitationRef removed]. A non-medical scientific research declaration was obtained from the Medical Research Ethics Committees United (MEC-U) of the St. Antonius Hospital with the following reference number: W15.006.
: Not Applicable.
: The authors declare that they have no competing interests.