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Other agents range from industrial chemical exposures to radiation from consistent exposure to X-rays to consistent exposure to some indoor or outdoor emissions

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Light to moderate intake of alcohol, drinking patterns, and risk of cancer: results from two prospective US cohort studies

The CDC, NIH, and WHO all conclude that cigar smoke contains cancer-causing chemicals that harm both smokers and those exposed to secondhand smoke

Surface Texture One aspect of the teeth that can predispose a person to more external staining than another person is the specific surface texture of the teeth