The debate over radon continues.
Tilyou
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D003043:Cocarcinogenesis; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology*; D009381:Neoplasms, Radiation-Induced / Q000209:etiology*; D011886:Radon; D012907:Smoking / Q000009:adverse effects*; D014481:United States
D011886:Radon