For citations:
Alexandrov T.L., Baranova T.A., Galyaev A.V., Korolevskiy E.S., Likutov A.A., Nanaeva B.A., Peda E.S. Series of clinical observations of Crohn’s disease of the upper gastrointestinal tract. Experimental and Clinical Gastroenterology. 2022;(11):247-251. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-207-11-247-251