Funding for this research was provided by:
Norges Forskningsråd (229082)
Høgskolen i Oslo og Akershus (no number)
Received: 22 December 2018
Accepted: 22 May 2019
First Online: 4 June 2019
Ethics approval and consent to participate
: This study received ethical approval from the Data Protection Official at the Norwegian Centre for Research Data (NSD). Both researchers and users gave their informed consent to participate in the study. All participants were made aware that they could withdraw from participation at any time during the analysis without affecting their involvement as researchers or panel members in the project in general. The empirical material was anonymised as much as possible, but the participants agreed to take part although anonymisation could not be fully guaranteed, as long as it was known in advance who participated in the project. Confidentiality and respect for each participant were emphasised.
: Participants have consented to publishing of their data.
: The authors declare that they have no competing interests.