• FDA - Vaporizers, E-Cigarettes, and other Electronic Nicotine Delivery Systems (ENDS) — Official FDA resource on vaporizer devices, including safety and regulatory information.
• CDC - About Electronic Cigarettes (E-Cigarettes) — CDC overview of e-cigarettes and related health information, useful for understanding device use.
• World Health Organization (WHO) - Tobacco: E-cigarettes — WHO Q&A on e-cigarettes, providing global perspective on health and safety considerations.