In the article "Silicosis Surveillance -- Michigan, New
Jersey,
Ohio, and Wisconsin, 1987-1990" on page 25, the last sentence of
the Case Confirmation paragraph is incorrect. The sentence should
state: "Case confirmation requires a) a history of occupational
exposure to airborne silica dust and a chest radiograph or other
imaging technique interpreted as consistent with silicosis or b) a
lung tissue biopsy indicating silicosis."
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