Funding for this research was provided by:
Stockholms Läns Landsting
Received: 26 February 2020
Accepted: 16 July 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: The study was approved by the Regional Ethic Committee in Stockholm, Sweden (reg. no. 2014/1999–31/4; 2016/1724–32). Since only observational data were collected, written informed consent was not required according to national law.
: Not applicable.
: The authors declare that they have no competing interests.