Pre-operative Serum CEA and CA19-9 Levels in Patients with Gastric Cancer: A Single-Center Experience. Eastern Journal of Medical Sciences, [S. l.], v. 3, n. 3, p. 39–43, 2018. DOI: 10.32677/EJMS.2018.v03.i03.003. Disponível em: https://mansapublishers.com/index.php/ejms/article/view/1172.. Acesso em: 25 aug. 2024.