[1] Canc Prevent Inst Calif, 2201 Walnut Ave,Suite 300, Fremont, CA 94538 USA
[2] Univ Texas Hlth Sci Ctr San Antonio, Dept Epidemiol & Biostat, 7703 Floyd Curl Dr, San Antonio, TX 78229 USA
[3] NCI, NIH, Outcomes Res Branch, Healthcare Delivery Res Program,Div Canc Control, 9609 Med Ctr Dr, Rockville, MD 20850 USA
[4] Univ Calif Davis, Dept Publ Hlth Sci, One Shields Ave,Med Sci 1-C, Davis, CA 95616 USA
[5] UC Davis Comprehens Canc Ctr, Div Hematol & Oncol, 4501 X St,Suite 3016, Sacramento, CA 95817 USA