1870-199X
1870-199X
S1870-199X2017000300198
Peru
Ecuador
00
09
2017
00
09
2017
21
3
198
204
[
1988
59
5
5
287-96
]
[
1990
5
4
4
347-59
]
[
1985
199-209
]
[
1990
7
1
1
9-17
]
[
1983
4
5
5
437-53
]
[
1996
54
4
4
420-32
]
[
1997
12
6
6
767-76
]
[
1992
7
3
3
360-6
]
[
2004
24
1
1
11-7
]
[
2000
15
4
4
491-9
]
[
2007
78
1
1
18-21
]
[
1996
11
4
4
476-88
]
[
2004
19
4
4
554-8
]
[
1992
12
6
6
463-73
]
[
1997
12
5
5
686-96
]
[
2005
16
2
2
147-55
]
[
2003
74
5
5
757-70
]
[
1997
12
3
3
310-8
]
[
2001
10
2
2
108-12
]
[
1996
54
4
4
420-32
]
[
1994
14
5
5
451-9
]
[
1982
163
163
261-71
]
[
1999
19
3
3
269-77
]