For citations:
Savelyeva M.I., Shalygin V.A., Ilyina E.S., Sinitsina I.I., Sychev D.A. Clinical case of an unrecognized gallstone disease in a patient of an older age group. Experimental and Clinical Gastroenterology. 2019;(6):113-121. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-166-6-113-121