Differences between black and white responses to cancer information service promotion mechanisms.
D000328:Adult; D000329:Advertising; D001741:Black or African American; D000368:Aged; D004219:District of Columbia; D005260:Female; D006801:Humans; D007255:Information Services / Q000706:statistics & numerical data*; D008297:Male; D009369:Neoplasms; D013689:Telephone