[1] St Louis Univ, Sch Publ Hlth, Dept Community Hlth, Hlth Commun Res Lab, St Louis, MO 63104 USA
[2] Univ N Carolina, Dept Psychol, Chapel Hill, NC USA
[3] Univ Penn, Annenberg Sch Commun, Philadelphia, PA 19104 USA
[4] Univ Penn, Abrams Canc Ctr, Philadelphia, PA 19104 USA
[5] Ohio State Univ, Sch Commun, Columbus, OH 43210 USA
[6] Univ Wisconsin, Ctr Hlth Syst Res & Anal, Madison, WI USA
[7] Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Ctr Commun Programs, Baltimore, MD USA
[8] St Louis Univ, Dept Psychol, St Louis, MO 63103 USA
[9] Northwestern Univ, Dept Commun Studies, Evanston, IL 60208 USA
[10] Univ Alabama Birmingham, Ctr Outcomes & Effectiveness Res & Educ, Birmingham, AL USA
[11] Vet Affairs Med Ctr, Deep S Ctr Effectiveness Res, Birmingham, AL USA
[12] NCI, Hlth Commun & Informat Res Branch, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA