title: Proactive recruitment in clinical trials: an idea whose time has come.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Carpenter
mesh_terms: D003376:Counseling / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D009042:Motivation; D016540:Smoking Cessation / Q000379:methods*; D000074606:Smoking Prevention; D013689:Telephone