Shostatska, Mariia. “Characteristics of the Degrees of Severity of the Course of Acute Intestinal Infection in Elderly Patients With COVID-19”. ScienceRise: Medical Science, no. 4(49) (July 29, 2022): 31–37. Accessed May 9, 2024. https://journals.uran.ua/sr_med/article/view/262500.