RT - journal article SR - Electronic T1 - SP - 2021-01-01 DO - 10.30629/2658-7947-2021-26-1-15-22 A1 - , A1 - , A1 - , A1 - , A1 - , A1 - , YR - 2021 UL - https://covid19.neicon.ru/publication/6598 AB -