Kristiansen, Jesper http://orcid.org/0000-0002-1637-8900
Friborg, Maria Kristine
Eller, Nanna
Brandt, Lars Peter Andreas
Glasscock, David John
Pihl-Thingvad, Jesper
Persson, Roger
Besèr, Aniella
Åsberg, Marie
Thorsen, Sannie Vester
Funding for this research was provided by:
The Danish Working Environment Research Fund (38-2014-09)
Article History
Received: 25 May 2018
Accepted: 21 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: The principles in the Helsinki declaration were followed. Patient enrolment and data collection were carried out with adequate comprehension and written informed consent from all participants. According to the Danish Act on Research Ethics Review of Health Research Projects, research projects not involving human biological material do not need approval in the ethics committee system [CitationRef removed]. Data security and confidentiality conformed to ISO 27001:2013 [CitationRef removed] and national legislation [CitationRef removed] and was approved by the Danish Data Protection Agency (reference no. 2015-57-0074).
: Not applicable.
: The authors declare that they have no competing interests.
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