2631-2581
2631-2581
S2631-25812018000300020
Ecuador
USA
00
12
2018
00
12
2018
27
3
20
24
[
1973
289
6
6
327-8
]
[
2012
109
9
9
1283-7
]
[
2009
73
10
10
1945-9
]
[
2015
65
4
4
303-7
]
[
2017
130
11
11
e5
]
[
1996
34
3-4
3-4
271-8
]
[
2018
9
2
2
256-7
]
[
2014
9
3
3
367-71
]
[
1999
20
3
3
495-9
]
[
2013
168
2
2
1618-20
]
[
2017
259
1-4
]
[
2018
]
[
2007
192
2
2
428-31
]
[
2017
68
6
6
683-7
]
[
1992
26
3
3
274-7
]