Whether e-cigarette use precedes smoking or smoking precedes e-cigarette use is a critical question, but it is one which needs to be answered through longitudinal research. We need studies that follow the trajectory of teen tobacco/e-cigarette use over time. That is the only way to determine which comes first.

According to the article: "The U.S. surgeon general's landmark finding last week that filtered cigarettes may actually increase the risk of lung cancer could lead to a flurry of new lawsuits against tobacco companies and even expand cigarette litigation outside of Florida, where it has flourished for nearly a decade."

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