New strong evidence that Juul is more toxic to lungs and hearts than earlier e cigs Stanton Glantz blog A Close Look at Vaping in Adolescents and Young Adults in the United States The Journal of Allergy and Clinical Immunology: In Practice Risks of E Cigarettes and Vape Pen Use E Cigarettes and Vaping Trends An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link