For citations:

Lazebnik L.B., Zhilina A.A., Shavkuta G.V., Turkina S.V., Khlynova O.V., Tarasova L.V. Gastroesophageal reflux (K 21.0, K 21.9). Classification of the Gastroenterological Scientific Society of Russia - 2025. Experimental and Clinical Gastroenterology. 2025;(3):5-12. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-235-3-5-12