Smokeless tobacco: a challenge for the 80s.
D000293:Adolescent; D002648:Child; D005260:Female; D006267:Health Education, Dental; D006801:Humans; D008297:Male; D009059:Mouth Diseases / Q000209:etiology / Q000517:prevention & control*; D009062:Mouth Neoplasms / Q000209:etiology / Q000517:prevention & control; D010353:Patient Education as Topic; D014030:Tobacco, Smokeless; D014481:United States