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Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health.

There is no general rule about how many lighters you are allowed to carry in your suitcase

E-cigs are battery-powered devices that work by heating a liquid into an aerosol that the user inhales and exhales

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Selection criteria covering trial participants and the terms of their participation are among the key reasons for the marked difference in findings