Direct mail the primary, preferred source of healthcare information for consumers.
D000329:Advertising / Q000379:methods*; D001364:Awareness; D003256:Community Participation / Q000706:statistics & numerical data*; D003625:Data Collection; D006801:Humans; D008389:Marketing of Health Services / Q000706:statistics & numerical data*; D011939:Mental Recall; D014481:United States