UYGUN, Ahmet; NAZAROĞLU, N. Kemal; ÇETİN, Celalettin; ERDİL, Ahmet; BAĞCI, Sait; GÜLŞEN, Mustafa; KAYAHAN, Cengiz; KARAEREN, Necmettin; DAĞALP, Kemal. Bile and serum carcinoembryonic (CEA) levels in biliary tract diseases. Turkish Journal of Gastroenterology, [S. l.], v. 10, n. 3, p. 287–290, 1999. Disponível em: https://www.turkjgastroenterol.org/index.php/tjg/article/view/1004. Acesso em: 1 jan. 2026.