Increasing use of chewing tobacco, especially among younger persons, alarms Surgeon General.
Marwick
C
C
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D010947:Plants, Toxic; D019966:Substance-Related Disorders / Q000453:epidemiology*; D014030:Tobacco, Smokeless; D014481:United States / Q000453:epidemiology