1028-9933
1028-9933
S1028-99332020000200107
Ecuador
00
04
2020
00
04
2020
99
2
107
114
[
2019
13
1
1
4-15
]
[
2017
21
11
11
3180-7
]
[
2017
13
1
1
66-74
]
[
2017
4
1
1
45-50
]
[
2016
20
2
2
158-66
]
[
2019
24
3
3
e305-13
]
[
2019
9
]
[
2017
6
4
4
46-51
]
[
2019
20
661
661
]
[
2018
30
3
3
226-31
]
[
2019
4
4
4
312-22
]
[
2017
31
2
2
343-6
]