Ulu, Y., S. Umit Tetikkurt, U. Izol, and Y. Donder. “Evaluation of MUC-1, MUC-4, CDX-2 and OCT-1 Expression Profiles in Gastric Carcinomas and Precancerous Lesions”. Annals of Medical Research, vol. 26, no. 12, May 2021, pp. 2908-14, http://www.annalsmedres.org/index.php/aomr/article/view/1892.