Yaroshenko, . R., S. Panasenko, I. Chorna, . M. Khorosh, and O. . Ligonenko. “Epidemiology of Gastrointestinal Bleedings Compared in Ukraine and in the Poltava Region”. Medicni Perspektivi, vol. 28, no. 3, Sept. 2023, pp. 198-04, doi:10.26641/2307-0404.2023.3.289227.