Funding for this research was provided by:
Helse Vest (912147)
Text and Data Mining valid from 2018-11-21
Received: 1 May 2018
Accepted: 6 November 2018
First Online: 21 November 2018
Ethics approval and consent to participate
: The interview study was approved by the National Committee for Research Ethics in the Social Sciences and the Humanities (NESH) (No. 2017/284 and 2017/75) and by the university hospital research ethics board. Participation in the cognitive interviews was based on verbal and written informed consent.
: Not applicable, as no individual participant data are included in the manuscript.
: The authors declare that they have no competing interests.
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