risks of electronic cigarettes Vaping Versus Smoking: Are Electronic-Cigarettes the Savior? What We Know About Vaping
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![PDF] Water-pipe smoking and serum testosterone levels in adult males in Qatar](https://ai2-s2-public.s3.amazonaws.com/figures/2017-08-08/430e7f1b75385477663f8899f36c3d88c8695bd7/4-Figure2-1.png)





