1Benson MC, Ring K, Kaplan SA, et al. The determination of D-O carcinoma of the prostate using PSA density Urologists Correspondence Club, September, 1989: 24.
2Benson MC, Whang IS, Pantuck A ,et al. Prostate specific antigendesity .
3a means of distinguishing benign prostate hyperplasia and prostate cancer, J Urol, 1992. 147: 815.
5Oesterling JE. Prostate specific antigen a critical assessment of the most useful tumor marker for adenocareinoma of the prostate. J Urol, 1991: 145: 907.
6Stamey TA, Yang N, Hay AR, et al. Prostate specific antigen as a serum marker for adenocarcinoma of the prostate. New Engl J Med, 1987; 317: 909.