Funding for this research was provided by:
The Norwegian Research Fund for General Practice (-)
The Norwegian Committee on Research in Primary Care (-)
The General Practice Research Unit, Norwegian University of Science and Technology (-)
The Norwegian Centre of Rural Medicine (-)
Article History
Received: 1 April 2019
Accepted: 3 September 2019
First Online: 18 October 2019
Ethics approval and consent to participate
: The study was approved by the Regional Committee for Medical and Health Research Ethics (REK) (Reference number: REK midt 2013/1501). All participants gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.