Received: 16 August 2018
Accepted: 8 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: Ethical approval for this study was attained from the National Committee on Health Research Ethics in Denmark (Case no. 1–10–72-264-16) and by the Danish Data Protection Agency. Written informed consent to participate was obtained and the study was conducted in accordance with the Helsinki Declaration of 2008. This trial is registered at ExternalRef removed (NCT03183960).
: Not applicable.
: The authors declare that they have no competing interests.
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