Yang, S.- ling, K.- qiang Tang, W.- kun Bai, E. Shen, Y.- wen Zhao, Y.- duan Lin, S.- liang Nan, and H. Bing. “Effects of Low-Frequency Ultrasound Combined With Microbubbles on Benign Prostate Hyperplasia”. Canadian Urological Association Journal, vol. 7, no. 11-12, Nov. 2013, pp. e681-6, doi:10.5489/cuaj.354.