Danyliuk, M. B., S. M. Zavhorodnii, M. A. Kubrak, and K. A. Boiko. “Assessment of the Condition Severity and Prediction of Postoperative Complications in Elderly and Senile Patients With Perforated Gastric and Duodenal Ulcer”. Zaporozhye Medical Journal 25, no. 6 (December 5, 2023): 523–527. Accessed November 26, 2024. http://zmj.zsmu.edu.ua/article/view/287014.