Funding for this research was provided by:
Text and Data Mining valid from 2018-06-22
Received: 6 December 2017
Accepted: 28 May 2018
First Online: 22 June 2018
Ethics approval and consent to participate
: In the Netherlands, ethics approval or written informed consent for this type of research is not required according to the Medical Research (Human Subjects) Act (WMO) [CitationRef removed]. Participants were informed orally about the purposes of the study beforehand and enabled to ask questions. They gave their verbal consent to participate and to anonymized publication of findings, which was recorded on tape.
: The authors declare that they have no competing interest.
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