Received: 20 June 2018
Accepted: 24 June 2019
First Online: 10 July 2019
Ethics approval and consent to participate
: The research was conducted in accordance with the Declaration of Helsinki [CitationRef removed]. The research proposal was submitted to and approved by the Medical Ethical Committee of the Academic Medical Center, Amsterdam, which judged that a comprehensive evaluation was not required since this study was not subject to the Netherlands’ Medical Research Involving Human Subjects Act (reference: W17_212#17.244). Prior to the interview, participants filled out an informed consent form allowing the results of the interview to be used anonymously for scientific research.
: Not applicable.
: The authors declare that they have no competing interests.