title: Nicotine-containing chewing gum in smoking cessation: a double blind trial with half year follow-up.
mesh_terms: D000328:Adult; D002638:Chewing Gum; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000008:administration & dosage / Q000627:therapeutic use*; D010919:Placebos; D012907:Smoking / Q000188:drug therapy*
chemical_list: D002638:Chewing Gum; D010919:Placebos; D009538:Nicotine