1. Radboud Scientific Center for Quality of Healthcare (IQ healthcare), Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands;
2. NIVEL, Netherlands Institute for Health Services Research, Utrecht, The Netherlands;
3. Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway;
4. The Norwegian Directorate of Health, Oslo, Norway;
5. Institute of Health and Society, University of Oslo, Oslo, Norway;
6. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway;
7. National Centre for Emergency Primary Health Care, Uni Research Health, Bergen, Norway