Ahmet UYGUN; N. Kemal NAZAROĞLU; Celalettin ÇETİN; Ahmet ERDİL; Sait BAĞCI; Mustafa GÜLŞEN; Cengiz KAYAHAN; Necmettin KARAEREN; Kemal DAĞALP. Bile and Serum Carcinoembryonic (CEA) Levels in Biliary Tract Diseases. Turkish Journal of Gastroenterology 2019, 10, 287-290.