Cohort study of electronic cigarette use: effectiveness and safety at 24 months
Lamberto Manzoli, Maria Elena Flacco, Margherita Ferrante, Carlo La Vecchia, Roberta Siliquini, Walter Ricciardi, Carolina Marzuillo, Paolo Villari, Maria Fiore
Tobacco Control May 2017, 26 (3) 284-292; DOI: 10.1136/tobaccocontrol-2015-052822