Comparison of percent free prostate specific antigen and prostate specific antigen density as methods to enhance prostate specific antigen specificity in early prostate cancer detection in men with normal rectal examination and prostate specific antigen between 4.1 and 10 ng./ml.

1. Morote, J.
2. Raventos, C.X.
3. Lorente, J.A.
4. Lopez-Pacios, M.A.
5. Encabo, G.
6. De Torres, I.
7. Andreu, J.