DOĞAN, Ümit Bilge; GÜMÜRDÜLÜ, Yüksel; GÖLGE, Necmettin; KARA, Banu. Relationship of CA 19-9 with choledocholithiasis and cholangitis. Turkish Journal of Gastroenterology, [S. l.], v. 22, n. 2, p. 171–177, 2011. DOI: 10.4318/tjg.2011.0186. Disponível em: https://www.turkjgastroenterol.org/index.php/tjg/article/view/1897. Acesso em: 1 jan. 2026.