2528-7907
2528-7907
S2528-79072020000400140
10.36097/rsan.v1i43.1412
Ecuador
00
12
2020
00
12
2020
43
140
154
[
2003
1
1
1
1-12
]
[
2003
1
1
1
1-12
]
[
2013
22
42
42
53-76
]
[
1994
31
3
3
645-73
]
[
2016
1
1
1
69
]
[
2004
12
2
2
5-25
]
[
100
2010
2010
43-54
]
[
1996
]
[
2003
1
1
1
19-33
]
[
2017
1-28
]
[
2005
11
1
1
]
[
2003
]
[
1987
946-55
]
[
2001
27 -35
]
[
1984
]
[
2005
21
1-2
1-2
125 -143
]
[
2000
]
[
2013
1-190
]
[
(201
2
]
[
2000
77,
65-72
]
[
2008
29
2
2
68-98
]
[
2005
]
[
1992
59 -83
]
[
2017
).
]
[
2018
)
2-8
]
[
1997
]
[
2008
1
67-86
]