1. Uniformed Services University of the Health Sciences, Bethesda, Maryland
2. Centers for Disease Control and Prevention, Atlanta, Georgia
3. McGill University Health Centre, Montreal, Quebec, Canada
4. University of Virginia School of Medicine, Charlottesville
5. Ramón y Cajal University Hospital, Madrid, Spain
6. Walter Reed National Military Medical Center, Bethesda, Maryland
7. Gonçalo Moniz Research Center, FIOCRUZ, Salvador, Bahia, Brazil
8. Carmel Medical Center, Haifa, Israel
9. Federal University of Rio Grande do Norte, Natal, Brazil
10. Bill and Melinda Gates Foundation, Seattle, Washington