Geybels, Milan S., Verhage, Bas A.J., Arts, Ilja C.W., Schooten, Frederik J. van, Goldbohm, Alexandra, R., Brandt, Piet A. van den (2013). "Dietary flavonoid intake, black tea consumption, and risk of overall and advanced stage prostate cancer". American Journal of Epidemiology, Vol.177, No.12 June. 15, 2013: p.1388-1398