title: Selection and quality assurance of tests in multicenter trials.
mesh_terms: D000135:Acid Phosphatase / Q000097:blood; D004796:Clinical Enzyme Tests / Q000592:standards; D019411:Clinical Laboratory Techniques / Q000592:standards*; D006801:Humans; D008297:Male; D011379:Prognosis; D011471:Prostatic Neoplasms / Q000175:diagnosis*; D011786:Quality Control; D012107:Research Design
chemical_list: D000135:Acid Phosphatase