[1] Lombardi Canc Ctr, Dept Oncol, Canc Control Program, Washington, DC 20007 USA
[2] Georgetown Univ, Dept Surg, Sch Med, Washington, DC 20057 USA
[3] Sibley Mem Hosp, Dept Surg, Washington, DC USA
[4] Columbia Univ, Dept Epidemiol, Mailman Sch Publ Hlth, New York, NY 10027 USA
[5] Beth Israel Deaconess Med Ctr, Dept Surg, New York, NY 10003 USA
[6] SUNY Buffalo, Roswell Pk Canc Inst, Dept Surg, Buffalo, NY 14263 USA
[7] Fox Chase Canc Ctr, Div Med Sci, Philadelphia, PA 19111 USA
[8] Fox Chase Canc Ctr, Div Populat Sci, Philadelphia, PA 19111 USA
[9] NCI, Bethesda, MD 20892 USA
[10] Dana Farber Canc Inst, Dept Med, Boston, MA 02115 USA