Funding for this research was provided by:
Region Östergötland (LIO-608241)
Received: 15 September 2020
Accepted: 8 February 2021
First Online: 17 February 2021
Ethics approval and consent to participate
: The study was approved by the regional ethical review board in Linköping, Sweden (register no 2012/194–31). Written information concerning the study was provided to all participants together with the questionnaire. Returning a filled-out questionnaire was considered informed consent to participate in the study. This procedure was approved by the ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.