Funding for this research was provided by:
The Västerbotten County Council, TUA, and the University of Umeå supported this work
Text and Data Mining valid from 2019-08-16
Received: 27 May 2019
Accepted: 31 July 2019
First Online: 16 August 2019
Ethics approval and consent to participate
: Subjects have given their written informed consent. The study protocol has been approved by the Regional Ethics Review Board in Umeå (Dnr: 2017/349–32).
: Not applicable.
: The authors have no conflicts or interest to declare. The authors alone are responsible for the content and writing of the paper.