Wang, Xiaochuan, Yu Zhang, Zhengguo Ji, Peiqian Yang, and Ye Tian. 2020. “Men With High Prostate Specific Antigen Have Higher Risk of Gleason Upgrading After Prostatectomy: A Systematic Review and Meta-Analysis”. Urology Journal 16 (7), 6127. https://doi.org/10.22037/uj.v16i7.6127.