Received: 6 September 2018
Accepted: 16 August 2019
First Online: 5 September 2019
Ethics approval and consent to participate
: The Norwegian Centre for Research Data (NSD) approved the study (Project No. 53525). The participants in this study received oral and written information about confidentiality and voluntary participation. The participant gave written consent by filling out the questionnaires and provided written consent prior to the focus group interviews.
: Not applicable.
: The authors declare that they have no competing interests.