For citations:

Balko O.A., Kharitonova L.A., Sapozhnikov V.G. Endoscopic features in children suffering from chronic H. pylori-associated gastroduodenitis, depending on the type of constitution. Experimental and Clinical Gastroenterology. 2023;(7):13-18. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-215-7-13-18