1. University of Maribor , Faculty of Medicine , Department of Family Medicine , Taborska 8, 2000 , Maribor , Slovenia
2. Health Services Research Unit , Akershus University Hospital , Akershus , Norway
3. Institute of Health and Society , University of Oslo , Oslo , Norway
4. Department of Global Public Health and Primary Care , University of Bergen , Bergen , Norway
5. National Centre for Emergency Primary Health Care , Uni Research Health , Bergen , Norway