For citations:

Shashel V.A., Firsova V.N. Epidemiology of erosive and ulcer diseases of the stomach and duodenum in children and adolescents of Krasnodar Region. Experimental and Clinical Gastroenterology. 2019;(1):64-69. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-161-1-64-69