Funding for this research was provided by:
Aase og Ejnar Danielsens Fond (30-000065)
Text and Data Mining valid from 2019-11-12
Received: 12 July 2019
Accepted: 1 November 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: The survey was approved by the Danish Data Protection Agency. In the introduction letter, it was emphasised that participation was voluntary and no informed consent was required. Danish legislation does not require ethical approval for surveys that do not involve human biological material (see section 14(2) of the Act on Research Ethics Review of Health Research Projects: ExternalRef removed).
: Not applicable.
: The authors declare that they have no competing interests.