1. Libertas International University, Facultyy of Health Science , J.F.Kennedy 6b, 10000 Zagreb , Croatia
2. University of Zagreb, Faculty of Organization and Informatics , Varaždin , Croatia
3. The Norwegian Directorate of Health , Oslo , Norway
4. Health Services Research Unit, Akershus University Hospital , Lørenskog , Norway
5. Institute of Health and Society, University of Oslo , Oslo , Norway
6. University of Bergen, Department of Global Public Health and Primary Care , Bergen , Norway
7. National Centre for Emergency Primary Health Care, NORCE Norwegian Research Centre , Bergen , Norway