1816-8949
1816-8949
S1816-89492020000100071
10.18004/anales/2020.053.01.71-080
Paraguay
00
04
2020
00
04
2020
53
1
71
80
[
2019
17
1
1
142
]
[
2017
318
7
7
647-56
]
[
2019
48
1
1
19-37
]
[
2019
19
1
1
578
]
[
2011
3
2
2
7-15
]
[
2017
106
6
6
973
]
[
2017
317
12
12
1258-68
]
[
2019
91
1-29
]
[
2019
57
1
1
23-38
]
[
2016
77
4
4
393-8
]
[
2019
156
4
4
885-9
]
[
2015
64
82-90
]
[
2019
160
34-45
]
[
2015
14
2
2
174-80
]
[
2019
8
4
4
173-85
]
[
2013
9
11
11
646-59
]
[
2015
1521-6
]
[
2014
58
6
6
625-9
]
[
2015
162
9
9
641-50
]
[
2010
123
2
2
183.e1-9
]
[
2018
]
[
2019
56
3
3
323-8
]
[
2019
18
3
3
287-92
]
[
2018
17
12
12
1169-75
]
[
2020
]
[
2017
20
1
1
51-6
]
[
2018
50
12
12
837-9
]
[
2014
132
6
6
364-71
]
[
2016
48
5
5
499-505
]
[
2020
12
1
1
]
[
2019
26
5
5
292-312
]
[
2018
15
1
1
61-70
]
[
2015
29
3
3
451-8
]
[
2019
19
1
1
45
]
[
2018
47
10
10
1358-66
]
[
2017
152
4
4
830-839.e5
]
[
2017
74
4
4
398-401
]
[
2015
21
31
31
9233-8
]
[
2017
127
5
5
352-60
]
[
2018
2
125-40
]