2550-6722
2550-6722
S2550-67222018000200037
Ecuador
Ecuador
Ecuador
Ecuador
00
12
2018
00
12
2018
6
37
45
[
2002
9
25
25
]
[
2014
2
2
89 - 107
]
[
2017
]
[
2011
50 - 59
]
[
2003
72
72
31 - 34
]
[
2013
4
4
49 - 53
]
[
2016
]
[
2010
1
1
1-20
]
[
2015
]
[
2009
24
6
6
314-24
]
[
2017
117 -37
]
[
2015
24
24
193-216
]