Smetskov, D. A., T. P. Yavorskaya, and N. N. Goncharova. “Erosion Gastroduodenite – As a Complication After Operation in Perforate Ulcer Patients”. Journal of Education, Health and Sport 7, no. 9 (September 10, 2017): 601–605. Accessed July 18, 2024. https://apcz.umk.pl/JEHS/article/view/4929.