Funding for this research was provided by:
Text and Data Mining valid from 2018-04-05
Received: 9 March 2017
Accepted: 14 March 2018
First Online: 5 April 2018
Ethics approval and consent to participate
: Ethics approval was obtained from the Regional Ethical Review Board in Lund (reference number: 2016/195). All respondents were informed about the study purposes and gave consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.
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