Klymenko, A. V., A. O. Steshenko, V. S. Tkachov, and M. M. Sofilkanych. 2021. “Specifics of Endoscopic Retrograde Cholangiopancreatographyin Patients With Altered Anatomy of Gastrointestinal Tract (a Literature Review)”. Zaporozhye Medical Journal 23 (6):872-81. https://doi.org/10.14739/2310-1210.2021.6.232988.