1. Children’s Hospital Colorado, Aurora, CO, USA
2. University of Colorado School of Medicine, Aurora, CO, USA
3. Colorado School of Public Health, Aurora, CO, USA
4. Fundación para la Salud Integral de los Guatemaltecos, Retalhuleu, Guatemala
5. Department of Molecular Virology and Microbiology, Baylor College of Medicine
6. Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA