cigarettes per day in laryngeal cancer life history Give It Up: Cutting back helps, but even a cigarette or two a carries risks Pack-years is a way to
Pack years is a way to measure a smoker's exposure to tobacco. Higher exposure means higher risk for lung cancer. beaumont.org lung What Is Laryngeal Cancer? Tobacco smoking Wikipedia Causal association of smoking and laryngeal cancer: A Mendelian randomization study
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