title: Screening for prostate cancer still a gray area.  Study findings raise questions about whether or not the PSA test saves lives.
mesh_terms: D000367:Age Factors; D000368:Aged; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods; D008875:Middle Aged; D017430:Prostate-Specific Antigen / Q000097:blood*; D011471:Prostatic Neoplasms / Q000097:blood* / Q000601:surgery
chemical_list: D017430:Prostate-Specific Antigen