Text and Data Mining valid from 2019-08-13
Received: 30 November 2018
Accepted: 24 July 2019
First Online: 13 August 2019
Ethics approval and consent to participate
: The study followed the tenets of the Declaration of Helsinki. The study was approved by the Ombudsman for Privacy in Research at the Norwegian Social Science Data Services (reference number 35374), and all data were treated according to their regulations. Data collection was organised digitally while taking care of appropriate data protection. The confidentiality of participants was protected by using an encryption key prior to data analyses. The key was stored separately from study data. Because the project was defined as a Quality Assurance project, Ethics committee approval was deemed unnecessary according to national regulations (Act 2008-06-20 no. 44).
: Not applicable.
: The authors declare that they have no competing interests.