Abu Horaira S, Badruddoza S. Significance of Carcinoembryonic Antigen (CEA) levels in colorectal carcinoma. BMCJ [Internet]. 2018 Jun. 30 [cited 2025 Jul. 21];4(1):3-11. Available from: https://bmcj.org/index.php/bmcj/article/view/80