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Smoking
Smoking Cessation
Tobacco Use Cessation
Nicotine
Tobacco, Smokeless
Cotinine
Nitrosamines
Carcinogens
Cocaine
Pyridines
Crack Cocaine
Tobacco Use Disorder
Substance Withdrawal Syndrome
Cocaine-Related Disorders
Heart Rate
Biological Markers
Double-Blind Method
Tobacco
Toxic Plants
United States
Co-Publications
45
28
17
16
13
12
11
10
9
8
7
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