1. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
2. Division of Health Policy and Management, College of Health Sciences, Korea University, Seoul, South Korea
3. Department of Public Health Sciences, Graduate School, Korea University, Seoul, South Korea
4. Harvard Center for Population and Development Studies, Cambridge, Massachusetts
5. Department of Economics and Centre for Modern Indian Studies, University of Goettingen, Germany