Department of Urology;
University of Texas MD Anderson Cancer Center;
Houston;
TX 77030;
USA;
Department of Pathology;
University of Texas MD Anderson Cancer Center;
Houston;
TX 77030;
USA;
Department of Biostatistics;
University of Texas MD Anderson Cancer Center;
Houston;
TX 77030;
USA.;
biopsy; down; grade; Gleas; on; score; prostate; cancer; upgrade;