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Black tea improves attention and self-reported alertness.
De Bruin EA, Rowson MJ, Van Buren L, Rycroft JA, Owen GN. De Bruin EA, et al. Among authors: owen gn. Appetite. 2011 Apr;56(2):235-40. doi: 10.1016/j.appet.2010.12.011. Epub 2010 Dec 21. Appetite. 2011. PMID: 21172396 Clinical Trial.