[1] Canc Res & Biostat, Seattle, WA 98109 USA
[2] Fred Hutchinson Canc Res Ctr, Publ Hlth Sci Div, 1124 Columbia St, Seattle, WA 98104 USA
[3] Univ Vermont, Dept Family Med, Burlington, VT USA
[4] Univ Vermont, Univ Vermont Canc Ctr, Burlington, VT USA
[5] Kaiser Permanente Washington, Hlth Res Inst, Seattle, WA USA
[6] Harvard Sch Publ Hlth, Harvard Canc Inst, Dana Farber, Div Gen Internal Med,Massachusetts Gen Hosp,Harva, Boston, MA USA
[7] Kaiser Permanente Southern Calif, Dept Res & Evaluat, Pasadena, CA USA
[8] RAND Corp, Santa Monica, CA USA
[9] Mem Sloan Kettering Canc Ctr, Dept Epidemiol & Biostat, New York, NY 10021 USA
[10] Univ Vermont, Dept Surg, Burlington, VT 05405 USA
[11] Univ Vermont, Dept Radiol, Burlington, VT USA
[12] Univ Texas Southwestern Med Ctr Dallas, Dept Internal Med, Dallas, TX USA
[13] Simmons Comprehens Canc Ctr, Dallas, TX USA
[14] Univ Vermont, Dept Pathol, Burlington, VT 05405 USA
[15] Univ Vermont, UVM Canc Ctr, Burlington, VT USA
[16] NCI, Healthcare Delivery Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA
[17] Geisel Sch Med Dartmouth, Dept Biomed Data Sci, Lebanon, NH USA
[18] Geisel Sch Med Dartmouth, Dept Epidemiol, Lebanon, NH USA
[19] Geisel Sch Med Dartmouth, Dartmouth Inst Hlth Policy & Clin Practice, Lebanon, NH USA
[20] Univ Penn, Dept Med, Perelman Sch Med, Philadelphia, PA 19104 USA
[21] CMC VA Med Ctr, Philadelphia, PA USA
[22] Geisel Sch Med Dartmouth, Norris Cotton Canc Ctr, Lebanon, NH USA
[23] Kaiser Permanente Northern Calif, Div Res, Oakland, CA USA
[24] Univ Texas Southwestern Med Ctr Dallas, Dept Clin Sci, Dallas, TX 75390 USA
[25] Univ Penn, Hosp Univ Penn, Perelman Sch Med, Dept Radiol, Philadelphia, PA USA
[26] MA Gen Hosp, Harvard Med Sch, Gen Med Div, Boston, MA USA
[27] Univ New Mexico, Dept Pathol, Hlth Sci Ctr, Albuquerque, NM 87131 USA
[28] Univ New Mexico, Dept Obstet & Gynecol, Hlth Sci Ctr, Albuquerque, NM USA
[29] Univ New Mexico, Comprehens Canc Ctr, Albuquerque, NM 87131 USA
[30] UTHlth Sch Publ Hlth, Dallas, TX USA
[31] Univ Penn, Perelman Sch Med, Dept Family Med & Community Hlth, Philadelphia, PA 19104 USA