1. Enteric Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
2. Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
3. PATH, Washington, DC, USA
4. Center for Immunization Research, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
5. Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD, USA
6. Vaccine Testing Center, Larner College of Medicine, The University of Vermont, Burlington, VT, USA
7. Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
8. Bacterial Disease Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
9. Norwegian National Advisory Unit on Tropical Infectious Diseases, Department of Medicine, Haukeland University Hospital, Bergen, Norway
10. Department of Clinical Science, University of Bergen, Bergen, Norway
11. Kenya Medical Research Institute and United States Army Medical Research Directorate-Africa, Kericho, Kenya
12. Henry M. Jackson Foundation Medical Research International, Bethesda, MD, USA