Funding for this research was provided by:
Received: 3 April 2021
Accepted: 16 September 2021
First Online: 26 September 2021
: We followed the 1964 Helsinki Declaration, which concerns human rights, informed consent, and correct procedures concerning treatment in research involving human participants. Written informed consent to participate was obtained from all the participants in the study. The study was approved by the regional ethics committee in Uppsala, Sweden (Dnr: 2018/425-31).
: Not applicable.
: The author declares that there are no competing interests.