[1] Oregon State Univ, Dept Anim Sci, Linus Pauling Inst, Corvallis, OR 97331 USA
[2] NCI, Lab Canc Prevent, CCR, Frederick, MD 21701 USA
[3] NCI, Infect & Immunoepidemiol Branch, DCEG, Bethesda, MD 20892 USA
[4] NCI, DCCPS, Epidemiol & Genet Res Program, Bethesda, MD 20892 USA
[5] NCI, DCEG, Nutr Epidemiol Branch, Bethesda, MD 20892 USA
[6] NICHHD, Biostat & Bioinformat Branch, Bethesda, MD 20892 USA