RT - journal article SR - Electronic T1 - SP - 2021-01-01 DO - 10.21292/2075-1230-2021-99-3-53-57 A1 - , A1 - , A1 - , A1 - , A1 - , A1 - , YR - 2021 UL - https://covid19.neicon.ru/publication/4044 AB -