19 2013 . N 1186 ,
20 2024 . 338
COVID-19 2020
23 2018 . N 317 ,
21 2011 . N 323- " "
22 2015
5 2013 N 44-
27 2012 . 1436 20062013
30 2020 . 616
13 2020 . N 1681
(2010-2015 )
22 2019 . N 24
COVID-19 ( 02.03.2020 06.10.2020)
2021
: ( 31 2009 .)
.