1. Department of Medical Ethics and Health Policy, University of Pennsylvania, Philadelphia
2. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia
3. Departments of Global Health and Epidemiology, Boston University School of Public Health, Boston, Massachusetts
4. Epidemiology Branch, National Institutes of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina
5. Division of Intramural Research, National Institute on Minority Health and Health Disparities, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland
6. Department of Social Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
7. Department of Sociology, University of Toronto, Toronto, Ontario, Canada
8. Department of Sociology, Northwestern University, Evanston, Illinois
9. Center for Global Health, Massachusetts General Hospital, Boston, Massachusetts
10. Harvard Medical School, Boston, Massachusetts