Starting with the risk of smoking approximately five cigarettes per day (35 cigarettes per week), generally the lowest level of risk detailed in these studies, we estimated the RR of smoking just ten cigarettes per week using a log transformation (Additional file 1: Table S5, Additional File 2)
[4] It is the world's fourth-largest international cigarette company measured by market share (after Philip Morris International, British American Tobacco and Japan Tobacco) and the world's largest producer of fine-cut tobacco and tobacco papers
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The typical symptoms include a dry cough, unexplainable fatigue, and irritation of the nose, eye, mouth, and skin
With oral lichen planus, theres also a small risk of the lesion turning into cancer