1990-8644
1990-8644
S1990-86442020000400410
Ecuador
Cuba
00
08
2020
00
08
2020
16
75
410
416
[
2019
1897-910
]
[
2016
13
1
1
1315-6268
]
[
2015
20
3
3
769-77
]
[
2015
69
51-66
]
[
2018
5
3
3
]
[
2016
]
[
2017
8
13
13
6-11
]
[
2020
]
[
2018
7
7
7
39-77
]
[
2013
13
27
27
85-106
]
[
2019
5
3
3
188-98
]
[
2017
]