1. Centre pour le Développement des Vaccins, Bamako, Mali;
2. Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah;
3. Infectious Diseases Division, International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh;
4. Division of Infectious Diseases, University of Utah School of Medicine, Salt Lake City, Utah;
5. Departments of Pediatrics and Environmental and Global Health, Emerging Pathogens Institute, University of Florida, Gainesville, Florida;
6. Department of Population Health Sciences, University of Utah School of Medicine, Salt Lake City, Utah