“STUDY OF MORPHOLOGICAL AND CLINICAL BASES OF ORGAN-PRESERVING SURGERY FOR AMPULAR CANCER OF THE RECTUM”, zr, vol. 4, no. 3, pp. 1498–1509, Apr. 2023, Accessed: Jul. 14, 2025. [Online]. Available: https://zetarepo.com/index.php/zr/article/view/632