1. Health Economics Research Unit, KEMRI-Wellcome Trust Research Programme, Nairobi, Kenya
2. Department of Health Systems Governance and Financing, World Health Organization, Geneva, Switzerland
3. Health Policy Research Group, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
4. Research Center for Health Policy and Economics at the Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Japan
5. Health Strategy and Policy Institute, Ministry of Health, Hanoi, Vietnam
6. Department of Global Health and Development, London School of Hygiene and Tropical Medicine, London, UK