Different Smoke Systems in Comparison, Normal Cigarette, Tobacco Heater with Sticks and E cigarette with Liquid on a Brown Table, Stock Image Image of quit, health: 156071235 Differences in the operation of tobacco heaters and e cigarettes NEW! Two Different Heated Tobacco Products vs. Cigarettes: Comparison of Nicotine Delivery and Subjective Effects in Experienced Users The impact of e cigarettes versus traditional cigarettes on long term cardiopulmonary outcomes American Journal of Physiology Heart and Circulatory Physiology American Physiological Society