1. Department of Global Health, University of Washington, Seattle
2. Department of Epidemiology, University of Washington, Seattle
3. Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle
4. Department of Biostatistics, University of Washington, Seattle
5. Division of Vaccine and Infectious Diseases, Fred Hutchinson Cancer Research Center, Seattle
6. Department of Medicine, Division of Allergy and Infectious Diseases, University of Washington, Seattle
7. Infection and Cancer Epidemiology Group, International Agency for Research on Cancer, Lyon, France
8. Coptic Hospital, Nairobi, Kenya