Funding for this research was provided by:
AFA Försäkring (150070)
Article History
Received: 18 June 2019
Accepted: 27 December 2019
First Online: 8 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The Regional Ethical Review Board at Umeå University approved this study (Dnr 2016-43-31M).