[1] Fred Hutchinson Canc Ctr, Epidemiol Program, Publ Hlth Sci Div, Seattle, WA USA
[2] Univ Washington, Dept Epidemiol, Seattle, WA USA
[3] Univ Washington, Dept Med, Seattle, WA USA
[4] Vet Affairs Puget Sound Hlth Care Syst, Div Gastroenterol, Seattle, WA USA
[5] Univ Washington, Seattle, WA USA
[6] Vet Affairs Puget Sound Hlth Care Syst, Res & Dev, Seattle, WA USA
[7] Fred Hutchinson Canc Ctr, Biostat Program, Publ Hlth Sci Div, Seattle, WA USA
[8] Seattle Childrens Res Inst, Ctr Child Hlth Behav & Dev, Seattle, WA USA
[9] Univ Washington, Dept Pediat & Nutr Sci Program, Seattle, WA USA
[10] Fred Hutchinson Canc Ctr, Canc Prevent Program, Publ Hlth Sci Div, Seattle, WA USA
[11] Fred Hutchinson Canc Ctr, 1100 Fairview Ave North, Seattle, WA 98109 USA