[1] NCI, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA
[2] Kaiser Permanente, Permanente Med Grp, San Jose, CA USA
[3] Univ N Carolina, Lineberger Comprehens Canc Ctr, Chapel Hill, NC 27515 USA
[4] Eshelman Sch Pharm, Chapel Hill, NC USA
[5] Massachusetts Gen Hosp, Div Gen Internal Med, Boston, MA 02114 USA
[6] Univ Utah, Sch Med, Dept Internal Med, Salt Lake City, UT 84112 USA
[7] Kaiser Permanente, Washington Hlth Res Inst, Oakland, CA USA
[8] Kaiser Permanente Colorado, Inst Hlth Res, Denver, CO USA
[9] Univ Penn, Perelman Sch Med, Dept Med, Philadelphia, PA 19104 USA
[10] Fred Hutchinson Canc Res Ctr, Div Publ Hlth Sci, 1124 Columbia St, Seattle, WA 98104 USA