Wahlström, Jens http://orcid.org/0000-0002-2359-509X
Burström, Lage
Johnson, Peter W.
Nilsson, Tohr
Järvholm, Bengt
Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2011-426, 2016-01016)
Article History
Received: 3 December 2016
Accepted: 22 May 2018
First Online: 31 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required and the the study was approved by the Regional Ethical Review Board situated at Umeå University (DNR 2011–367 32M).