Quitting Smoking During Pregnancy And Beyond Breastfeeding and Medication E cigarettes and nicotine abstinence: a meta analysis of randomised controlled trials European Respiratory Society Efficacy and safety of electronic cigarettes as a smoking cessation intervention: A systematic review and network meta analysis The Royal College of Physicians (RCP) concluded in its report, E cigarettes and harm reduction: An evidence review, that these devices play a crucial role in lowering health inequalities and deaths linked to Cochrane Review: E cigs more effective than traditional NRT to quit smoking Wolfson Institute of Population Health Disposable e cigarettes and their nicotine delivery, usage pattern, and subjective effects in occasionally smoking adults Scientific Reports