@article{art1270,
  title = {CEA Value Based on Age, Location and Histopathology Degree of Tumor Factors in Colorectal Cancer Patients at Haji Adam Malik General Hospital Medan in 2011-2015},
  doi = {10.18535/ijmsci/v5i5.19},
  url = {https://articlecta.com/index.php/ijecs/article/view/1270}
}