1. Center for Genome Sciences, US Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland
2. US Centers for Disease Control and Prevention, Monrovia, Liberia
3. Division of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia
4. Liberian Institute for Biomedical Research, Charlesville
5. Ministry of Health and Social Welfare, Monrovia, Liberia
6. Naval Medical Research Unit 3, Cairo, Egypt