1.
Siregar GA, Sibarani H. Comparison of Carcinoembryonic Antigen Levels Among Degree of Differentiation and Colorectal Cancer’s Location in Medan. Open Access Maced J Med Sci [Internet]. 2019 Oct. 14 [cited 2024 May 2];7(20):3447-50. Available from: https://oamjms.eu/index.php/mjms/article/view/oamjms.2019.442