Poulsen, Per Hoegh https://orcid.org/0000-0002-0196-2290
Biering, Karin
Winding, Trine Nøhr
Nohr, Ellen Aagaard
Petersen, Liselotte Vogdrup
Ulijaszek, Stanley J.
Andersen, Johan Hviid
Funding for this research was provided by:
Municipality of Herning (15.20.00-G01-33-12)
Central Denmark Region Health Science Research Fund (A955)
KEJ Fund
Article History
Received: 20 May 2019
Accepted: 26 September 2019
First Online: 7 November 2019
Ethics approval and consent to participate
: The study was appoved by the Danish Data Protection Agency. According to Danish Law (Act on Research Ethics Review of Health Research Projects), questionnaire and register-based studies require neither approval by ethical or scientific committees nor informed consent [].
: Not applicable.
: The authors declare that they have no competing interests.