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Xanthine oxidase inhibition reverses endothelial dysfunction in heavy smokers

Tobacco smoking is the most popular form, being practiced by over one billion people globally, of whom the majority are in the developing countries

Mortality rates vary by geographic locations [18, 19], and the inclusion of survey years was an attempt to capture any variations due to unobserved characteristics

The FDA Center for Tobacco Products is well aware of this and is committed to funding research that seeks more definitive answers to the many unanswered questions about the safety, harm, and even potential clinical utility of e-cigarettes