1815-7696
1815-7696
S1815-76962020000300472
Ecuador
Cuba
00
09
2020
00
09
2020
18
3
472
484
[
2017
31
2
2
]
[
2005
]
[
2006
]
[
2004
]
[
2018
8th
]
[
1990
]
[
2014
7
2
2
]
[
2017
25
52
52
51-60
]
[
2016
7
2
2
05-14
]
[
2015
2
11-7
]
[
2016
44
175-88
]
[
1996
]
[
2020
22
1-11
]
[
2017
15
6
6
]
[
1996
]
[
2016
11
2
2
24-35
]
[
2016
18
30
30
14-27
]
[
1989
]
[
2003
]
[
2017
13
21
21
71-80
]
[
2017
9
4
4
145-54
]
[
2015
11
1
1
]
[
2016
5
09
09
95-108
]
[
2018
22
3
3
186-96
]
[
2000
21
109-18
]
[
2012
10
2
2
]
[
2017
1
111-29
]
[
2020
31
2
2
]