1816-8949
1816-8949
S1816-89492020000100041
10.18004/anales/2020.053.01.41-048
Paraguay
00
04
2020
00
04
2020
53
1
41
48
[
2007
164
6
6
942-8
]
[
2009
194
3
3
204-11
]
[
2017
26
7
7
857-67
]
[
2015
]
[
2018
28
10
10
1059-88
]
[
2015
9
4
4
317-21
]
[
2014
20
25
25
4112-8
]
[
2006
8
1
1
37-43
]
[
2013
54
6
6
589-98
]
[
2008
33
3
3
422-38
]
[
2007
370
9598
9598
1540
]
[
2017
50
2
2
95-102
]
[
2018
64
7
7
690-704
]
[
2015
9
1
1
30-5
]
[
2011
41
10
10
2121-9
]
[
2011
342
d738
]
[
2011
68
6
6
555-61
]
[
2009
47
6
6
517-24
]
[
2009
195
6
6
492-7
]
[
2012
18
32
32
5165-87
]
[
2009
24
7
7
515-23
]
[
2006
44
7
7
1007-15
]
[
2013
209
3
3
459-65
]
[
2010
2
4
4
241-55
]
[
2015
7
4
4
249-69
]
[
2006
60
1
1
38-43
]
[
2007
257
7
7
371-7
]
[
2016
61
1
1
60-1
]
[
2009
124
1
1
71-8
]
[
1999
104
2
2
e20
]
[
2014
49
4
4
427-34
]
[
2018
34
5
5
700-5
]
[
2015
41
S13-20
]
[
2016
10
1177
]
[
2016
15
3
3
195-204
]
[
2008
95
1
1
90-6
]
[
2016
16
1
1
50
]
[
2009
57
7-8
7-8
579-89
]
[
2016
10
3
3
761-71
]
[
2017
13
188-200
]