1. Health Intervention and Technology Assessment Program (HITAP), Ministry of Public Health, Nonthaburi, Thailand
2. Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
3. Department of Economics & Related Studies, and Centre for Health Economics, University of York, London, UK
4. London School of Hygiene and Tropical Medicine (LSHTM), London, UK
5. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada