Text and Data Mining valid from 2018-07-03
Received: 6 March 2018
Accepted: 25 June 2018
First Online: 3 July 2018
Ethics approval and consent to participate
: This study was conducted on the approval obtained from the Norwegian Social Science Data Services (NSD; project number 45723). The Regional Committee for Medical and Health Research West-Norway (REK West) evaluated this project as “not mandatory to submit” (Ref. number 2015/2249). All the participants received information about the purpose of the study, and written consent to participate was given at the start of the study, ensuring that no individual participants could be identified in published material. The digital questionnaires were treated in confidence.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.