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Han, Dae-Hee and Harlow, Alyssa F and Miech, Richard A and Bae, Dayoung and Cho, Junhan and Dai, Hongying D and Sussman, Steven Y and Sanchez, Louisiana M and Meza, Leah and Leventhal, Adam M (2025) Nicotine pouch and e-cigarette use and co-use among US youths in 2023 and 2024. JAMA Network Open , 8 , (4) .