[1] NCI, Hlth Serv & Econ Branch, Appl Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA
[2] Agcy Healthcare Res & Qual, Ctr Primary Care Prevent & Clin Partnerships, Rockville, MD USA
[3] NCI, Appl Canc Screening Res Branch, Behav Res Program, Div Canc Control & Populat Sci, Bethesda, MD USA
[4] Med Univ S Carolina, Charleston, SC 29425 USA
[5] Harvard Univ, Sch Med, Dept Ambulatory Care & Prevent, Boston, MA USA
[6] Univ N Carolina, Sch Med, Chapel Hill, NC USA
[7] Mem Sloan Kettering Canc Ctr, Dept Med, New York, NY 10021 USA