Funding for this research was provided by:
Inland Hospital Trust
Text and Data Mining valid from 2018-04-10
Received: 19 September 2017
Accepted: 27 March 2018
First Online: 10 April 2018
Ethics approval and consent to participate
: All participants gave their written, informed consent before enrolment in the study. The study was approved by the South-Eastern Norway Regional Committee for Medical and Health Research Ethics (Reference number 2014/2189). The Declaration of Helsinki was followed when this study was conducted.
: Not applicable.
: The authors declare that they have no competing interests.
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