Nicotine chewing gum in general practice.
D002638:Chewing Gum; D006801:Humans; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000627:therapeutic use*; D000074606:Smoking Prevention; D019966:Substance-Related Disorders / Q000209:etiology
D002638:Chewing Gum; D009538:Nicotine