1. Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland;
2. Department of Epidemiology, University of Michigan, Ann Arbor, Michigan;
3. Asociación Benéfica Proyectos de Informática, Salud, Medicina, y Agricultura (A.B. PRISMA), Iquitos, Peru;
4. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland;
5. Fogarty International Center/National Institutes of Health, Bethesda, Maryland