Mustafa GÜLŞEN (2020) “CARCINOEMBRYONIC ANTIGEN (CEA) LEVELS IN BLOOD SERUM AND GASTRIC JUICE IN BENIGN AND MALIGNANT GASTRIC LESIONS”., Turkish Journal of Gastroenterology, 5(1), pp. 68–71. Available at: https://tjg.avesjournals.com/index.php/tjg/article/view/805 (Accessed: 19 August 2025).