TY JOUR TI The Effectiveness of Rehabilitation in a Day Hospital for Patients Previously Suffered from Covid Pneumonia KW new coronavirus infection caused by SARS-CoV-2 KW COVID-19 KW rehabilitation KW sanatorium KW third stage of rehabilitation JO Bulletin of Rehabilitation Medicine AU Guryanova., E.A. AU Kuzminykh., A.F. AU Peredreeva., A.K. PY 2022 IS 21 PB Federal State Budgetary Institution «National Medical Research Center of Rehabilitation and Balneology» of Ministry of Healthcare of Russian Federation