Đức Hoàng Đồng, and Nguyễn Xuân Quýnh. “CARBOHYDRATE ANTIGEN 19-9 (CA 19-9) AND CARCINOEMBRYONIC ANTIGEN (CEA) SERUM MARKERS ARE ASSOCIATED WITH SOME FACTORS OF CHOLANGIOCARCINOMA”. Vietnam Medical Journal 498, no. 2 (May 5, 2021). Accessed August 22, 2024. https://tapchiyhocvietnam.vn/index.php/vmj/article/view/182.