1. Vaccine and Infectious Diseases Division, Fred Hutchinson Cancer Center , Seattle, Washington , USA
2. Allergy and Infectious Diseases Division, Department of Medicine, University of Washington , Seattle, Washington , USA
3. Department of Global Health, University of Washington , Seattle, Washington , USA
4. Uganda Cancer Institute , Kampala , Uganda
5. Division of Oncology, Department of Medicine, University of Virginia , Charlottesville , USA
6. Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia , Charlottesville, Virginia , USA