Funding for this research was provided by:
AFA Försäkring (140366)
Text and Data Mining valid from 2020-01-16
Received: 26 September 2019
Accepted: 2 January 2020
First Online: 16 January 2020
Ethics approval and consent to participate
: Before the study, all the participants signed an informed consent document according to the Helsinki Declaration [CitationRef removed]. The study was approved by the Regional Ethical Review Board, Faculty of Medicine, University of Lund, Sweden (Dnr LU 389–94; Dnr 2016/132).
: Not applicable.
: The authors declare that they have no competing interests.