U of Alabama smokeless tobacco study under fire.
Nelson
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D000407:Alabama; D006801:Humans; D009369:Neoplasms / Q000209:etiology / Q000517:prevention & control*; D010947:Plants, Toxic; D012907:Smoking / Q000009:adverse effects; D014030:Tobacco, Smokeless / Q000009:adverse effects*; D014495:Universities