1. Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO
2. Center for Global Health, Colorado School of Public Health, Aurora, CO
3. Children’s Hospital Colorado, Aurora, CO
4. Department of Epidemiology, Colorado School of Public Health, Aurora, CO
5. Department of Physical Medicine and Rehabilitation, University of Colorado School of Medicine, Aurora, CO
6. Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY
7. Center for Human Development, Fundacion para la Salud Integral de los Guatemaltecos, Retalhuleu, Guatemala
8. Department of Surgery, University of Colorado School of Medicine, Aurora, CO
9. Department of Medicine, Emory University School of Medicine, Atlanta, GA
10. Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
11. Department of Molecular Virology and Microbiology
12. Department of Pediatrics, Baylor College of Medicine, Houston, TX.