TY JOUR TI INDICATORS OF PRODUCTION ACTIVITY OF THE BLOOD SERVICE INSTITUTIONS OF THE ASTRAKHAN REGION FOR 2018-2020 KW donor blood and its components KW donation KW new coronavirus infection COVID-19 JO CASPIANJOURNALOF MEDICINE AND PHARMACY AU Zheltova, M.N. AU Meshcheryakov, V.N. AU Popova, O.V. AU Shahabedinova, G.F. PY 2021 IS 2 PB Astrakhan State Medical University