Funding for this research was provided by:
Cancerfonden (CAN 2016/684)
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2016-00081)
Robert Lundbergs Minnesstiftelse (FS-2018:0004)
Distinguished International Students Scholarship (201406010275)
Text and Data Mining valid from 2019-08-16
Received: 28 March 2019
Accepted: 22 July 2019
First Online: 16 August 2019
Ethics approval and consent to participate
: The study was approved by the Regional Ethical Review Board in Stockholm (Dnr 2012/217/-32/2 and 2014/1401-32).
: All authors approved the manuscript and consented to its publication.
: The authors declare that they have no competing interests.