1. Division of Infectious Diseases, Department of Medicine, Emory University, Atlanta, Georgia;
2. Departamento de Producción, Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción, San Lorenzo, Paraguay;
3. Departamento de Salud Pública, Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción, San Lorenzo, Paraguay;
4. Departments of Pediatrics and Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas;
5. Fundación para la Salud Integral de los Guatemaltecos, FUNSALUD, Quetzaltenango, Guatemala;
6. Division of Infectious Diseases and Epidemiology, Department of Pediatrics, University of Colorado at Denver, Aurora, Colorado;
7. Medical Research Institute, Colombo, Sri Lanka;
8. Division of Infectious Diseases, Department of Pediatrics, Emory University, Atlanta, Georgia;
9. Department of Global Health, Rollins School of Public Health, Atlanta, Georgia