Keyes, Katherine M and Kreski, Noah T and Ankrum, Hadley and Cerdá, Magdalena and Chen, Qixuan and Hasin, Deborah S and Martins, Silvia S and Olfson, Mark and Miech, Richard (2022) Frequency of adolescent cannabis smoking and vaping in the United States: Trends, disparities and concurrent substance use, 2017-19. Addiction , 117 , (8) , pp. 2316-2324.