1028-9933
1028-9933
S1028-99332020000300217
Ecuador
00
06
2020
00
06
2020
99
3
217
224
[
2015
18
18
511-5
]
[
2017
21
7
7
813-8
]
[
2016
20
2
2
158-66
]
[
2017
21
11
11
3180-7
]
[
2016
10
20
20
2217-23
]
[
2018
30
3
3
226-31
]
[
2017
18
8
8
714-21
]
[
2019
24
9
9
3345-56
]
[
2017
13
24
24
65-77
]
[
2018
21
4
4
249-57
]
[
2015
56
3
3
199-203
]
[
2018
16
2
2
179-201
]
[
2016
20
6
6
700-9
]
[
2015
19
1
1
38-50
]
[
2016
20
2
2
158-66
]