ARDIANTO, T.; WARSINGGIH, W.; SEWENG, A. Correlation Between Histopathological Grading and Appearance of Obstruction With Level of Carsino-Embryonic Antigen (CEA) in Colorectal Carcinoma. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 45, n. 2, p. 31–38, 2019. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9932. Acesso em: 6 may. 2024.