DIAGNOSTIC ACCURACY OF PROSTATE-SPECIFIC ANTIGEN DENSITY, FREE-TO-TOTAL PSA RATIO, AND DIGITAL RECTAL EXAMINATION IN DETECTING PROSTATE CANCER AMONG MEN WITH SERUM PSA LEVELS IN THE GRAY ZONE (4–10 NG/ML): A PROSPECTIVE OBSERVATIONAL STUDY. FMHR [Internet]. 2026 Mar. 26 [cited 2026 Nov. 8];4(3):2473-82. Available from: https://fmhr.net/index.php/fmhr/article/view/3452