An assessment of the effectiveness of nicotine chewing gum: unfulfilled expectations.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002638:Chewing Gum; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D009538:Nicotine / Q000008:administration & dosage*; D011897:Random Allocation; D012107:Research Design; D000074606:Smoking Prevention; D014030:Tobacco, Smokeless
D002638:Chewing Gum; D009538:Nicotine