[1] Natl Ctr Chron Dis Prevent & Hlth Promot, Prevent Res Centers Program, Div Adult & Community Hlth, Ctr Dis Control & Prevent, Peacham, VT 05862 USA
[2] USF, Florida Prevent Res Ctr, Tampa, FL USA
[3] Univ Washington, Seattle, WA 98195 USA
[4] Univ N Carolina, Chapel Hill, NC USA
[5] Dartmouth Med Sch, Barre, VA USA
[6] Amer Canc Soc, Atlanta, GA 30329 USA
[7] Ctr Dis Control & Prevent, Atlanta, GA USA