Funding for this research was provided by:
Region Örebro län
Received: 22 April 2020
Accepted: 17 August 2020
First Online: 24 August 2020
Ethics approval and consent to participate
: The study was approved by the Regional Ethical Review Board of Uppsala, Sweden (No.: 2016/242). Participants provided written informed consent, and were informed that participation was on voluntary basis and that they could withdraw from the study at any time. Confidentiality was guaranteed.
: Not applicable.
: The authors declare that they have no competing interests.