CANORUÇ, Naime, Turhan ÖZDEN, Fikri CANORUÇ, and Necati YENİCE. 1993. “THE ROLE OF THE LEVEL OF THE SERUM Cu, Zn, Ca, IN THE GASTROINTESTINAL CARCINOMA DIAGNOSIS”. Turkish Journal of Gastroenterology 4 (1):157-60. https://www.turkjgastroenterol.org/index.php/tjg/article/view/234.