For citations:

Dronova O.B., Kagan I.I., Kolesnikova E.V., Chindyaskin M.A., Shepelev A.N., Shamkaev R.V. Features of endoscopic anatomy of transition zones of the gastrointestinal tract and their clinical significance. Filin’s Clinical endoscopy. 2025;67(1):26-33. (In Russ.) https://doi.org/10.31146/2415-7813-endo-67-1-26-33