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Description
The most commonly encountered risk factor for COPD is long-term direct or passive exposure to cigarette smoke (CS)

To view a copy of this license, visit About this article Cite this article Henning, Y., Willbrand, K., Larafa, S

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Detecting Free Radicals in E-Cigarettes Detecting Free Radicals in E-Cigarettes from AZoNetwork on Vimeo

A pulmonary infection does not appear to be causing the symptoms, which have generally not improved with antibiotic treatment alone
