1. a Assistant Professor in the Department of Society, Human Development, and Health , Harvard School of Public Health
2. b Doctoral student in the Department of Society, Human Development, and Health , Harvard School of Public Health
3. c Graduate student in the Department of Society, Human Development, and Health , Harvard School of Public Health
4. d Assistant Professor in the Department of Health Care Policy , Harvard Medical School
5. e Professor in the Department of Economics , Harvard University
6. f Thomas D. Cabot Professor of Public Policy in the Department of Society, Human Development, and Health , Harvard School of Public Health