Naime CANORUÇ, Turhan ÖZDEN, Fikri CANORUÇ, and Necati YENİCE, “THE ROLE OF THE LEVEL OF THE SERUM Cu, Zn, Ca, IN THE GASTROINTESTINAL CARCINOMA DIAGNOSIS”, Turkish Journal of Gastroenterology, vol. 4, no. 1, pp. 157–160, Apr. 2020.