Funding for this research was provided by:
Västerbotten Läns Landsting
The Strategic Research Program in Care Sciences
JC Kempe's foundation
Received: 11 April 2019
Accepted: 6 January 2020
First Online: 17 January 2020
Ethics approval and consent to participate
: Ethical approval was granted from the regional ethical review board (Dnr. 2017–296-31 M/2018–242-32 M) and written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.