Funding for this research was provided by:
Karolinska Institutet (Strategic Research Area Health Care Science, Karolinska Institutet/Umeå University)
Text and Data Mining valid from 2019-07-24
Received: 12 March 2019
Accepted: 2 July 2019
First Online: 24 July 2019
Ethics approval and consent to participate
: Ethical approval was deemed not to be necessary by the Central Denmark Region Ethic Review Board. Written informed consent was obtained by participants. They gave their consent to participate at the commencement of the questionnaire.
: Not applicable to this study.
: The authors declare that they have no competing interests.