CANORUÇ, N. (1993) “THE ROLE OF THE LEVEL OF THE SERUM Cu, Zn, Ca, IN THE GASTROINTESTINAL CARCINOMA DIAGNOSIS”, Turkish Journal of Gastroenterology, 4(1), pp. 157–160. Available at: https://turkjgastroenterol.org/index.php/tjg/article/view/234 (Accessed: 1 January 2026).