1. Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London WC1H 9SH, UK
2. School of Politics and International Studies (POLIS), University of Leeds, Woodhouse Leeds LS2 9JT, UK
3. Training and Research Support Centre (TARSC), Harare, Zimbabwe
4. Danish Centre for Health Economics University of Southern Denmark, 5000 Odense C Denmark & Imperial College London, Faculty of Medicine, Institute of Global Health Innovation, London SW7 2AZ, UK
5. Ministry of Health and Child Care, Harare, Zimbabwe
6. Division of Population Health, Health Services Research & Primary Care, The University of Manchester, Manchester, M13 9NT, UK
7. National Institute of Health Research, Ministry of Health and Child Care, Harare, Zimbabwe