Zhang, Yingqiang, Ze Song, Jun Tang, Min Wu, and Zhi Li. 2025. “Clinical Values of Serum Carcinoembryonic Antigen (CEA), Glycoprotein Antigen (CA) 50, CA19-9, and CA72-4, and the Soluble Fragment of Cytokeratin 19 (CYFRA21-1) in Early Screening and Prognosis Prediction of Colon Cancer: Clinical Values of Serum Tumor Markers”. Journal of Medical Biochemistry 44 (9): 1910-17. https://doi.org/10.5937/jomb0-55648.