2311-2581
2311-2581
S2311-25812021000200090
10.36610/j.jsaas.2021.080200090
Ecuador
00
00
2021
00
00
2021
8
2
90
101
[
2010
]
[
2016
]
[
2015
40
11
11
744-50
]
[
2016
36
I
I
143-59
]
[
2012
8
15
15
9-26
]
[
2016
]
[
2016
77
1
1
118-23
]
[
2014
]
[
2019
2019
7857504
]
[
2015
2
]
[
2019
31
10
10
165
]
[
2013
]
[
2012
23
2
2
160-70
]
[
2011
23
9
9
23
]
[
2009
]
[
2010
-2
01
]
[
2016
]
[
2016
]
[
2006
]
[
2008
]
[
2019
]
[
2019
]
[
2017
]