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Authors
Persson, Roger http://orcid.org/0000-0002-7208-2944
Österberg, Kai http://orcid.org/0000-0003-1907-8812
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Funding
Funding for this research was provided by:
Swedish Research Council for Health, Working Life and Welfare (2011-0236)
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Article History
Received: 20 March 2020
Accepted: 16 June 2020
First Online: 26 June 2020
Ethics approval and consent to participate
: The Regional Ethical Review Board in Lund, Sweden (Reg. No. 2012/298) approved the study protocol and all informant gave written informed consent prior to the study.
: Not applicable.
: The authors declare that they have no competing interests.
