1. Hollman PCH, Katan MB (1999) Dietary flavonoids: intake, health effects and bioavailability. Food Chem Toxicol 37:937–942
2. Agricultural Research Service. US Department of Agriculture (USDA) (2014) Database for the flavonoid content of selected foods, Beltsville. http://www.ars.usda.gov/SP2UserFiles/Place/80400525/Data/Flav/Flav_R03-1.pdf . Accessed 5 Jun 2015
3. Agricultural Research Service. US Department of Agriculture (USDA) (2008) Database for the isoflavone content of selected foods, Beltsville. http://www.ars.usda.gov/SP2UserFiles/Place/80400525/Data/isoflav/Isoflav_R2.pdf . Accessed 9 Jun 2015
4. Agricultural Research Service. US Department of Agriculture (USDA) (2004) Database for the proanthocyanidin content of selected foods, Beltsville. http://www.ars.usda.gov/SP2UserFiles/Place/80400525/Data/PA/PA.pdf . Accessed 7 Jun 2015
5. Middleton E, Kandaswami C, Theoharides TC (2000) The effects of plant flavonoids on mammalian cells: implications for inflammation, heart disease, and cancer. Pharmacol Rev 52:673–751