[1] Ctr Dis Control & Prevent, Div Canc Prevent & Control, Natl Ctr Chron Dis Prevent & Hlth Promot, 4770 Buford Highway NE,S107-4, Atlanta, GA 30341 USA
[2] RTI Int, Biostat & Epidemiol Div, 2987 Clairmt Rd NE 400, Atlanta, GA 30329 USA
[3] Ctr Dis Control & Prevent, Off Smoking & Hlth, Natl Ctr Chron Dis Prevent & Hlth Promot, 4770 Buford Highway NE,S107-7, Atlanta, GA 30341 USA
[4] Ctr Dis Control & Prevent, Atlanta, GA 30341 USA
[5] Amer Canc Soc, Surveillance & Hlth Serv Res Program, Atlanta, GA 30329 USA