?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Singh&rft.au=Singh%2C+S&rft.aufirst=S&rft.date=8+February+2021&rft.atitle=Long-term+biopsy+outcomes+in+prostate+cancer+patients+treated+with+external+beam+radiotherapy%3A+a+systematic+review+and+meta-analysis&rft.title=Prostate+Cancer+and+Prostatic+Diseases&rft.genre=article