For citations:

Pechkurov D.V., Tyazheva A.A., Romanova A.A. Epidemiological aspects of chronic diarrhea in children in the Samara region. Experimental and Clinical Gastroenterology. 2023;(7):86-93. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-215-7-86-93