%0 Journal Article %A Elise Hickman %A Ilona Jaspers %T Evolving chemical landscape of e-cigarettes, 2021 %D 2021 %R 10.1136/tobaccocontrol-2021-056808 %J Tobacco Control %P tobaccocontrol-2021-056808 %U https://tobaccocontrol.bmj.com/content/tobaccocontrol/early/2021/07/20/tobaccocontrol-2021-056808.full.pdf