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It is advisable to check your fuse box every month, especially during extreme weather conditions

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Emerg Radiol

The committee developed a conceptual framework illustrating potential causal pathways by which e-cigarettes could affect health to help integrate and present evidence on known and likely e-cigarette exposures, potential mechanisms, intermediate outcomes, and disease endpoints

The strongest design would follow an entire population of youth beginning at an age at which risk of use of any product is negligible (e.g., 10 years old) and investigate time-varying associations between e-cigarette ever use and later combustible tobacco cigarette use at multiple developmental stages throughout the entire period of risk (e.g., up until age 29), while using multiple methods to establish temporal precedence of vaping relative to smoking