1. Lee Kuan Yew School of Public Policy, National University of Singapore, Singapore
2. Yenching Academy, Peking University, Beijing, China
3. Research Center for Public Health, School of Medicine, Tsinghua University, Beijing, China
4. Department of Health Policy and Management, School of Public Health, Peking University, Beijing, China
5. School of Economics and Center for Human and Economic Development Studies, Peking University, Beijing, China