Funding for this research was provided by:
AFA Försäkring (070068)
Text and Data Mining valid from 2019-04-01
Received: 13 July 2018
Accepted: 4 March 2019
First Online: 1 April 2019
Ethics approval and consent to participate
: The Regional Ethics Committee in Lund approved each of the separate studies in which the data used in this study were collected. All participant gave their informed consent to participate in the separate studies. In most studies consent was written. In some (older) studies it was given verbally, which in those cases was approved by the ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.
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