Funding for this research was provided by:
Research and Development fund of Region Kronoberg (NA)
Research Council of South Eastern Sweden (FORSS), Linköping (NA)
Article History
Received: 17 December 2019
Accepted: 18 November 2020
First Online: 1 December 2020
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki, and was approved by the Regional Ethical Review Board of Linköping University, Linköping (Registration no. M120–07, T89–08). All participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.