1028-9933
1028-9933
S1028-99332021000600015
Ecuador
00
12
2021
00
12
2021
100
6
[
2015
49
2
2
57-63
]
[
2019
12
16
16
2528
]
[
2014
62
2
2
173-5
]
[
2020
2ed
]
[
2018
43
4
4
]
[
2015
]
[
2019
45
521-5
]
[
2020
S0022-3913
20
20
30079-2
]
[
2016
52
8-14
]
[
2020
112
]
[
2018
]
[
2016
18
28
28
48-59
]
[
2019
9
303-10
]
[
2020
19
1
1
64-71
]
[
2018
]
[
2017
22
3
3
143-9
]
[
2020
203-11
]
[
2015
49
2
2
57-63
]
[
2016
]
[
2019
5
4
4
116-9
]
[
2017
118
2
2
131-4
]
[
2016
32
6
6
317-21
]
[
2017
117
646-55
]
[
2020
32
4
4
389-94
]
[
2020
19
1
1
64-71
]
[
2017
63
1-7
]
[
2018
53
4
4
221-5
]
[
2017
59
54-61
]
[
2018
68
41-50
]
[
2016
41
1
1
76-82
]
[
2018
62
3
3
293-7
]
[
2019
1-7
]
[
2016
8
6
6
]
[
2016
32
5
5
607-14
]
[
2017
42
3
3
327-34
]