1. Institute for Policy Research, Northwestern University, Evanston, Illinois;
2. Department of Anthropology, Northwestern University, Evanston, Illinois;
3. Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, South Carolina;
4. Department of Kinesiology, College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, Texas;
5. Center for Research on Population and Health, American University of Beirut, Beirut, Lebanon;
6. School of Medicine, University of California San Francisco, San Francisco, California