M.S. TURCHINА, M.V. BUKREEVA, ZH.E. ANNENKOVA, YU.M. MOROZOV, T.I. OBOLENSKAYA  Orel State University named after I.S. Turgenev, Orel  Contact details: Turchina M.S. — PhD (medicine), Associate professor of the Department of Internal Diseases Address: 95 Komsomolskaya St., Orel, Russian Federation, 302026, tel.: +7-961-625-92-98, e-mail: turchina-57@mail.ru  Patients with COVID-19 often suffer from a variety of gastrointestinal disorders. […]