Behind the doubling of Smoore's sales in a year, has the e cigarette market improved again? Population Based Disease Odds for E Cigarettes and Dual Use versus Cigarettes NEJM Evidence Elevated Toxic Element Emissions from Popular Disposable E Cigarettes: Sources, Life Cycle, and Health Risks ACS Central Science Notes from the Field: E Cigarette and Nicotine Pouch Use Among Middle and High School Students United States, 2024 MMWR How much nicotine is in a cigarette compared to a vape? Vaping The Guardian