Quitting smoking: nicotine vs placebo gum.
Jacobson
T A
TA
D003376:Counseling; D006801:Humans; D009538:Nicotine / Q000008:administration & dosage*; D010819:Physician's Role; D010919:Placebos; D012107:Research Design; D012907:Smoking; D013375:Substance Withdrawal Syndrome / Q000628:therapy*
D010919:Placebos; D009538:Nicotine