1. International Clinical Research Center, Department of Global Health, Schools of Medicine and Public Health, University of Washington , Seattle, Washington , USA
2. Department of Epidemiology, School of Public Health, University of Washington , Seattle, Washington , USA
3. Division of Allergy and Infectious Diseases, Department of Medicine, School of Medicine, University of Washington , Seattle, Washington , USA
4. Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington , Seattle, Washington , USA
5. Center for Emerging and Re-emerging Infectious Diseases, University of Washington , Seattle, Washington , USA
6. Global Health Labs , Bellevue, Washington , USA