1. Wolfram, Swen. “Effects of green tea and EGCG on cardiovascular and metabolic health.” Journal of the American College of Nutrition 26, no. 4 (2007): 373S-388S.
2. Imai, Kazue, Kenji Suga, and Kei Nakachi. “Cancer-preventive effects of drinking green tea among a Japanese population.” Preventive medicine 26, no. 6 (1997): 769-775.
3. Ruxton, C. H. S. “The impact of caffeine on mood, cognitive function, performance and hydration: a review of benefits and risks.” Nutrition Bulletin 33, no. 1 (2008): 15-25.