Comparison of percent free PSA, PSA density, and age-specific PSA cutoffs for prostate cancer detection and staging

William J. Catalona^*, Paula C. Southwick, Kevin M. Slawin, Alan W. Partin, Michael K. Brawer, Robert C. Flanigan, Anup Patel, Jerome P. Richie, Patrick C. Walsh, Peter T. Scardino, Paul H. Lange, Gail H. Gasior, Kathleen G. Loveland, Kurtis R. Bray