1. Food and Drug Administration . Smokeless tobacco products, including dip, snuff, Snus, and chewing tobacco, 2020. Available: https://www.fda.gov/tobacco-products/products-ingredients-components/smokeless-tobacco-products-including-dip-snuff-snus-and-chewing-tobacco
2. Food and Drug Administration . Dissolvable tobacco products, 2018. Available: https://www.fda.gov/tobacco-products/products-ingredients-components/dissolvable-tobacco-products
3. Tobacco companies introduce 'tobacco-free' nicotine pouches;Robichaud;Tob Control,2020
4. Kary T , Gretler C . Big tobacco hopes oral nicotine pouches fill the Vaping void. Bloomberg Businessweek, 2020. Available: https://www.bloomberg.com/news/articles/2020-07-17/big-tobacco-hopes-oral-nicotine-pouches-fill-the-vaping-void
5. Initial information on a novel nicotine product;Plurphanswat;Am J Addict,2020