Carlsson, Tommy http://orcid.org/0000-0003-4141-8692
Mattsson, Elisabet
Funding for this research was provided by:
Uppsala County Council
Article History
Received: 18 January 2017
Accepted: 29 November 2017
First Online: 12 January 2018
Ethics approval and consent to participate
: Ethical approval to conduct the study was obtained from the Regional Ethical Review Board in Uppsala, Sweden (Approval number 2012/553/2). Informed written and oral consent was collected before enrolment.
: Not applicable.
: The authors declare that they have no competing interests.
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