Khudayberganova N.Kh, Ahmedova I.M, Azimova A.A, Sibirkina M.V., and Gimadutdinova A.R. “Extragasteral Manifestations of Helicobacter Pylori Associated Gastroduodenal Pathology in Children”. Eurasian Medical Research Periodical, vol. 8, May 2022, pp. 98-105, https://geniusjournals.org/index.php/emrp/article/view/1502.