Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (AgeCap 2013-2300)
Text and Data Mining valid from 2019-08-19
Received: 4 February 2019
Accepted: 31 July 2019
First Online: 19 August 2019
Ethics approval and consent to participate
: The Regional Ethics Committee at the University of Gothenburg approved this study (869–13). All participants gave their written informed consent to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.