Funding for this research was provided by:
Vetenskapsrådet (K2012- 62X-22130-04-6)
Received: 20 February 2019
Accepted: 15 January 2020
First Online: 17 March 2020
Ethics approval and consent to participate
: The study was approved by The Regional Ethics Review Board of Stockholm (Approval number. 2014/1742–31 and 2017/1688–31) at Karolinska Hospital. All involvement was voluntary and participants provided written informed consent prior to data collection.
: Not applicable.
: The authors declare that they have no competing interests.