1. Manchester Centre for Health Economics, University of Manchester, Manchester, UK
2. Danish Centre for Health Economics, Department of Public Health, University of Southern Denmark, J.B., Odense C, Denmark
3. Centre for Health Policy, Institute of Global Health Innovation, Imperial College London, London, UK
4. Research Unit for General Practice, University of Southern Denmark, J..B, Odense C, Denmark
5. School of Social Sciences, University of Manchester, Manchester, UK