1 Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO 80045, USA; Center for Global Health and Department of Epidemiology, Colorado School of Public Health, Aurora, CO, USA; Children's Hospital Colorado, Aurora, CO, USA. Electronic address: edwin.asturias@childrenscolorado.org.
2 Bill and Melinda Gates Foundation, Seattle, WA, USA.
3 Global Research in Infectious Diseases, Rio de Janeiro, Brazil.
4 Emory Vaccine Center, Atlanta, GA, USA.
5 Fighting Infectious Diseases in Emerging Countries, Miami, FL, USA.