Racial differences in prostate-specific antigen levels in patients with local-regional prostate cancer.
Vijayakumar S, Karrison T, Weichselbaum RR, Chan S, Quadri SF, Awan AM. Racial differences in prostate-specific antigen levels in patients with local-regional prostate cancer. Cancer Epidemiol Biomarkers Prev. 1992 Nov-Dec; 1(7):541-5.