E cigs outperform patches and gums in quit smoking study E cigarettes more effective than patches, gum at helping people quit smoking, study finds MinnPost Govt urged to loosen e cigarette rules RNZ News Electronic cigarettes and smoking cessation: an interview with Professor Peter Hajek Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica E cigarettes more effective than nicotine replacement therapies, finds major UK clinical trial Queen Mary University of London