9Kim TH, Lim HI, Kim MS, et al. Dietary supplements for benign prostatie hyperplasia: An overview of system atie reviews [J]. Maturitas, 2012, 73 (3): 180-185.
10Klippel KF, Hiltl DM, Schipp B. A multicentric, placebo- controlled, double-blind clinical trial of β -sitosterol (phytosterol) for the treatment of benign prostatic hyperplasia [J]. BJU International, 1997, 80 (3): 427-432.