1409-3871
1409-3871
S1409-38712020000100037
10.15517/lank.v20i1.41157
Ecuador
Ecuador
USA
00
04
2020
00
04
2020
20
1
37
47
[
1997
25
17
17
3389-3402.
]
[
2011
3
1
1
136-54
]
[
1997
135
1
1
143-149.
]
[
2013
3
10-7
]
[
2012
22
4
4
297-307
]
[
2014
]
[
1994
7
501-16
]
[
2016
108
4
4
625-37
]
[
2020
85
18
18
1445
]
[
1987
]
[
2003
24
105-11
]
[
2016
54
2155-61
]
[
2019
19
1
1
187-202.
]
[
2019
39
26-36
]
[
1987
83
83
]
[
2019
29
5
5
531-40
]
[
2011
]
[
2005
5
28
]
[
2014
87
18-25
]
[
2019
29
5
5
541-7
]
[
2000
2-8-9
]
[
1998
281
5385
5385
2034-8
]
[
2012
99
7
7
1158-76
]
[
2012
]
[
2005
4
309-15
]
[
2012
7
5
5
850-7
]
[
1995
]
[
2015
116
3
3
391-402
]
[
2020
239-80
]
[
2014
202
2
2
337-40
]
[
2010
]
[
2002
22
4
4
315-33
]
[
2006
110
11
11
1257-70
]
[
2012
23
3
3
453-60
]
[
2009
104
3
3
543-56
]
[
1987
28
2
2
145-54
]
[
2008
5
1
1
83-90
]
[
1990
315-22
]
[
2015
108
1-16
]
[
2008
49
2
2
147-51
]
[
2013
100
9
9
1823-30
]
[
2007
120
2
2
229-36
]
[
2005
46
2
2
73-7
]
[
2009
25
2
2
295-303
]
[
2009
96
11
11
1997-2009
]
[
1993
8
3
3
155-62
]
[
2003
205-26
]