Funding for this research was provided by:
The Norwegian Government, allocated through the Central Norway Regional Health Authority
Text and Data Mining valid from 2018-08-15
Received: 22 February 2018
Accepted: 4 July 2018
First Online: 15 August 2018
Ethics approval and consent to participate
: All procedures performed in the study involving human participants were in accordance with the ethical standards of the national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Written informed consent was obtained from all individual participants included in the study. The study has been approved by the Regional Committee for Medical and Health Research Ethics in Central Norway (No.: 2010/2404).
: Not applicable.
: The authors declare that they have no competing interests.
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