AKDOĞAN, M. (2019) “Are serum and biliary carcinoembryonic antigen and carbohydrate antigen19-9 determinations reliable for differentiation between benign and malignant biliary disease?”, Turkish Journal of Gastroenterology, 14(3), pp. 181–184. Available at: https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/1179 (Accessed: 27 July 2025).