Dose-reaction relationships between workplace secondhand smoke exposure and lung cancer threat between lifetime nonsmokers Twenty years after secondhand smoke was first classified like a cause of lung cancer in lifetime nonsmokers, the evidence supporting causation continues to mount (USDHHS 1986). More than fifty epidemiologic reports have tackled the association between https://devinelptx.oblogation.com/18524651/volatile-organic-compounds-pollution-for-dummies