[1] Univ Washington, Dept Epidemiol, Seattle, WA 98104 USA
[2] Univ Washington, Dept Pathol, Seattle, WA 98104 USA
[3] Univ Washington, Dept Biostat, Seattle, WA 98104 USA
[4] Univ Washington, Human Papillomavirus Res Grp, Seattle, WA 98104 USA
[5] Univ Washington, Human Papillomavirus Res Lab, Seattle, WA 98104 USA
[6] Univ Washington, Harborview Med Ctr, Seattle, WA 98104 USA