E-cigarettes and smoking cessation in real-world and clinical settings: a systematic review and meta-analysis

Smokers increasingly use e-cigarettes for many reasons, including attempts to quit combustible cigarettes and to use nicotine where smoking is prohibited. We aimed to assess the association between e-cigarette use and cigarette smoking cessation among adult cigarette smokers, irrespective of their motivation for using e-cigarettes.PubMed and Web of Science were searched between April 27, 2015, and June 17, 2015. Data extracted included study...