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9. Comparison of tumor M2-pyruvate kinase (tumor M2-PK), carcinoembryonic antigen (CEA), carbohydrate antigens CA 19-9 and CA 72-4 in the diagnosis of gastrointestinal cancer. Schneider J, Schulze G. Anticancer Res; 2003 Mar; 23(6D):5089-93. PubMed ID: 14981971 [Abstract] [Full Text] [Related]