Smokers switching to e cigarettes have an increased heart attack risk, says ICMR study: Why quitting smoking is the only way out The characteristics and risk factors of e cigarette use among adolescents in Shanghai: A case control study What do we tell patients about e cigarettes? BDJ Team Flavoring Agents in E cigarette Liquids: A Comprehensive Analysis of Multiple Health Risks Cureus Electronic cigarette exposure disrupts airway epithelial barrier function and exacerbates viral infection American Journal of Physiology Lung Cellular and Molecular Physiology American Physiological Society