2Catalona WJ, Richie JP, Ahmann FR, et al. Comparison of digi- tal rectal examination and serum prostate specific antigen (PSA) in the early detection of prostate cancer:results of a multicenter clinical trial of 6 630 men. J Urol, 1994, 151(5): 1283-1290.
3Mettlin C, Jones G, Averette H, et al. Defining and updating the American Cancer Society guidelines for the cancer-related checkup: prostate and endometrial cancers. CA Cancer J Clin, 1993, 43(1): 42-46.
