Funding for this research was provided by:
Norges Teknisk-Naturvitenskapelige Universitet
Norwegian Research Fund for General Practice
Norwegian Committee on Research in General Practice
Received: 18 May 2020
Accepted: 29 March 2021
First Online: 7 April 2021
: The study was approved by the regional committee for medical and health research ethics (REK) (2013/1732 / REK). All participants gave informed, written consent to the study by completing and returning the questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.