No smoking.
Summerlin
D J
DJ
D006801:Humans; D007194:India / Q000453:epidemiology; D009062:Mouth Neoplasms / Q000453:epidemiology / Q000209:etiology; D010947:Plants, Toxic; D012907:Smoking / Q000401:mortality; D014030:Tobacco, Smokeless; D014481:United States / Q000453:epidemiology