RT Journal Article SR Electronic T1 Evolving chemical landscape of e-cigarettes, 2021 JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP tobaccocontrol-2021-056808 DO 10.1136/tobaccocontrol-2021-056808 A1 Elise Hickman A1 Ilona Jaspers YR 2021 UL http://tobaccocontrol.bmj.com/content/early/2021/07/20/tobaccocontrol-2021-056808.abstract AB