Contemporary Prostate Cancer Prevalence among T1c Biopsy-Referred Men with a Prostate-Specific Antigen Level ≤ 4.0ng per Milliliter - Ahyai, Sascha A.; Graefen, Markus; Steuber, Thomas; Haese, Alexander; Schlomm, Thorsten; Walz, Jochen; Köllermann, Jens; Briganti, Alberto; Zacharias, Mario; Friedrich, Martin G.; Karakiewicz, Pierre I.; Montorsi, Francesco; et al. (European Urology, 2008)