Article History
Received: 2 February 2018
Accepted: 25 July 2018
First Online: 4 August 2018
Ethics approval and consent to participate
: This study was approved by the Danish Data Protection Agency and performed in accordance with the Danish Research Ethics Committee. All participants provided written consent before gaining access to the online questionnaire used in this study.
: Not applicable.
: The authors declare that they have no competing interests.
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