title: [The present status and future directions for standardization of PSA assays in PSA gray zone].
authors.affiliation: Department of Urology, Gunma University School of Medicine.
authors.forename: Kohei
authors.initials: K
authors.lastname: Kurokawa
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Yamanaka
authors.forename: Midori
authors.initials: M
authors.lastname: Ishibashi
authors.forename: Shojiro
authors.initials: S
authors.lastname: Kano
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Arai
mesh_terms: D014408:Biomarkers, Tumor / Q000097:blood*; D006801:Humans; D008297:Male; D017430:Prostate-Specific Antigen / Q000097:blood*; D011471:Prostatic Neoplasms / Q000175:diagnosis*; D011933:Reagent Kits, Diagnostic; D012015:Reference Standards; D012680:Sensitivity and Specificity
chemical_list: D014408:Biomarkers, Tumor; D011933:Reagent Kits, Diagnostic; D017430:Prostate-Specific Antigen