1. Sydney School of Public Health; University of Sydney; Sydney Australia
2. Centre for Health Policy; Programs and Economics; The University of Melbourne; Melbourne Australia
3. Department of Economics; Lund University; Lund Sweden
4. Health Economics and Management; Institute of Economic Research; Lund University; Lund Sweden
5. Centre for Primary Health Care Research; Lund University; Lund Sweden
6. Department of Public Health and Caring Sciences; Family Medicine and Clinical Epidemiology; Uppsala University; Uppsala Sweden
7. Department of Clinical Sciences; Lund University; Malmo Sweden
8. Institute of Medicine; Sahlgrenska University Hospital; University of Gothenburg; Göteborg Sweden