Zavhorodnii, S. M., Kapshytar, O. V., Kotenko, O. I., Kapshytar, O. O., & Danyliuk, M. B. (2022). The results of endoscopic and surgical methods of hemostasis in persons of elderly and senile age with acute gastrointestinal bleeding caused by an ulcer. Zaporozhye Medical Journal, 24(4), 402–407. https://doi.org/10.14739/2310-1210.2022.4.245872