For citations:
Ivashkin V.T., Maev I.V., Lapina T.L., Fedorov E.D., Sheptulin A.A., Trukhmanov A.S., Kononov A.V., Abdulkhakov R.A., Alexeeva O.P., Alekseenko S.A., Andreev D.N., Baranskaya E.K., Dekhnich N.N., Klyaritskaya I.L., Kozlov R.S., Kogan E.A., Korolev M.P., Korochanskaya N.V., Kurilovich S.A., Livsan M.A., Osipenko M.F., Pavlov P.V., Pirogov S.S., Sarsenbaeva A.S., Simanenkov V.I., Tertychny A.S., Tkachev A.V., Uspensky Yu.P., Khlynov I.B., Tsukanov V.V. Clinical Recommendations of Russian Gastroenterological Association and RENDO Endoscopic Society on Diagnosis and Treatment of Gastritis and Duodenitis. Russian Journal of Gastroenterology, Hepatology, Coloproctology. 2021;31(4):70-99. (In Russ.) https://doi.org/10.22416/1382-4376-2021-31-4-70-99