title: Active vs passive recruitment to quitline studies: public health implications.
authors.forename: Damon J
authors.initials: DJ
authors.lastname: Vidrine
authors.forename: Jennifer Irvin
authors.initials: JI
authors.lastname: Vidrine
mesh_terms: D003376:Counseling; D006801:Humans; D018579:Patient Selection; D011634:Public Health / Q000639:trends*; D016032:Randomized Controlled Trials as Topic / Q000592:standards; D012907:Smoking / Q000628:therapy; D016540:Smoking Cessation / Q000379:methods / Q000706:statistics & numerical data; D013689:Telephone