For citations:
Kasparov E.V., Polivanova T.V., Vshivkov V.A. Gastroesophageal Reflux Disease and Erosive-Ulcerative Lesions of the Gastroduodenal Zone in Schoolchildren of Various Ages in Siberia. Russian Journal of Gastroenterology, Hepatology, Coloproctology. 2019;29(4):22-29. (In Russ.) https://doi.org/10.22416/1382-4376-2019-29-4-22-29