Received: 3 June 2019
Accepted: 19 August 2019
First Online: 27 August 2019
Ethics approval and consent to participate
: The Regional Committee for Health Research Ethics in The Capital Region of Denmark assessed the study in January 2016 and stated that, according to Danish legislation, this study did not require its approval (journal no. H-15019197). We have written informed consent from all the participants.
: Not applicable.
: The authors have no conflicts of interest to disclose.