Funding for this research was provided by:
FP7 People: Marie-Curie Actions (n0 609020 Scientia Fellows)
The Norwegian Directorate of Health (2011003565)
Text and Data Mining valid from 2018-06-05
Received: 23 June 2017
Accepted: 24 May 2018
First Online: 5 June 2018
Ethics approval and consent to participate
: The protocol for the research project has been approved by the Norwegian Social Science Data Services where aspects of privacy protection were assessed (approval January 30, 2013, project number 32835) [CitationRef removed]. Informed consent was obtained from all participants for participation and publication. Since the study does not include patients as participants, we were not, according to Norwegian regulations, obliged to seek approval from the Regional Committee for Medical and Health Research Ethics [CitationRef removed] (ACT 2008–06-20 no. 44: Act on medical and health research, § 4).
: All participants in this study gave fully written informed consent for participation and publication.
: The authors declare that they have no competing interests.
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