Funding for this research was provided by:
AFA Försäkring (130275)
Text and Data Mining valid from 2019-08-27
Received: 20 February 2019
Accepted: 7 August 2019
First Online: 27 August 2019
Ethics approval and consent to participate
: The Regional Ethics committee of Uppsala, Sweden, approved the study (Dnr: 2014/224). All subjects gave their written consent to participate and were informed that they could terminate their participation at any time.
: Not applicable.
: The authors declare that they have no competing interests.