For citations:
Levitan B.N., Skvortsov V.V., Eremenko N.V. Extrapulmonary manifestations of SARS-CoV-2: a new coronavirus infectionas an aggravating factor in peptic ulcer disease. Experimental and Clinical Gastroenterology. 2022;(3):134-142. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-199-3-134-142