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A Century of Kretek

Ethics declarations Competing interests The authors declare no competing interests

However, e-cigarette vapor still contains nicotine a highly addictive drug carcinogens, ultrafine particles, heavy metals, and other potentially harmful chemicals such as formaldehyde

Further experimental details are provided in the Methods section, with additional information on the cigarettes and sampling techniques presented in Supplementary Sections S1 and S2, respectively

"The Bootleg Nikes That Got Banned by Big Tobacco"

Model 3776 ultrafine condensation particle counter: Operation and service manual, Revision B (2006)