[1] Ctr Dis Control & Prevent, Div Canc Prevent & Control, Natl Ctr Chron Dis Prevent & Hlth Promot, 4770 Buford Highway Northeast, Atlanta, GA 30341 USA
[2] London Sch Hyg & Trop Med, Dept Noncommunicable Dis Epidemiol, Canc Survival Grp, London, England
[3] Rutgers Sch Publ Hlth, Dept Epidemiol, Piscataway, NJ USA
[4] Rutgers Canc Inst New Jersey, New Brunswick, NJ USA