The Significance of Carbohydrate Antigen 19-9, Carcinoembryonic Antigen, Calcium and Zinc as Biomarkers in Sera of Colorectal Cancer Patients. Baghdad Sci.J [Internet]. 2024 Dec. 22 [cited 2025 Jun. 1];21(12(Suppl.):3971-9. Available from: https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/8660