Funding for this research was provided by:
Arbejdstilsynet (23-2015-03 20150018099)
Text and Data Mining valid from 2019-03-25
Received: 13 June 2018
Accepted: 12 March 2019
First Online: 25 March 2019
Compliance with ethical standards
: According to Danish law, survey-based studies are not considered for approval by the Scientific Ethics Committee.
: All respondents gave their informed consent when replying to the questionnaire and the project procedure for treatment of sensitive data was approved by the Danish Data Protection Agency, Journal #15/96549.