| Affiliation: | 1. Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA;2. National Cancer Institute, NIH, Rockville, MD, USA;3. Proyecto Epidemiológico Guanacaste, Fundación INCIENSA, Guanacaste, Costa Rica;4. International Agency for Research on Cancer, Lyon, France;5. Clinical Microbiology Laboratory, Harborview Medical Center, Seattle, WA, USA;6. Department of Laboratory Medicine, University of Washington, Seattle, WA, USA;7. Department of Microbiology, University of Washington, Seattle, WA, USA |
