Voigt, Jeffrey D Use of the 4Kscore test to predict the risk of aggressive prostate cancer prior to prostate biopsy: Overall cost savings and improved quality of care to the us healthcare system. [electronic resource] - Reviews in urology 2017 - 1-10 p. digital Publication Type: Journal Article ISSN: 1523-6161 Standard No.: 10.3909/riu0753 doi