NIHAT OKÇU; BEKIR SAMİ UYANIK; ERSIN AKARSU; EBUBEKIR BAKAN; H. ZEKI TONBUL. The importance of carbonhydrate antigens (CA 19-9, CA 125), carcinoembriyonic antigen (CEA) and alkaline phosphatase (AP) in patients with gastric and colorectal cancer. Turkish Journal of Gastroenterology, [S. l.], v. 6, n. 4, p. 467–471, 2020. Disponível em: https://tjg.avesjournals.com/index.php/tjg/article/view/1006. Acesso em: 4 jul. 2025.