1. Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
2. Yale Institute for Global Health, New Haven, Connecticut
3. Department of Family and Community Health, School of Nursing, University of Pennsylvania, Philadelphia
4. Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
5. Department of Geography and Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill
6. Kaiser Permanente Vaccine Study Center, Oakland, California
7. Institute for Vaccine Safety, Departments of International Health and Health Behavior Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
8. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut
9. Center for Health Incentives and Behavioral Economics, Perelman School of Medicine, University of Pennsylvania, Philadelphia
10. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia