1816-8949
1816-8949
S1816-89492020000300159
10.18004/anales/2020.053.03.159
Paraguay
00
12
2020
00
12
2020
53
3
159
164
[
2012
58
]
[
2014
5
3
3
323-5
]
[
2005
13
3
3
217-9
]
[
2019
63
5
5
509-13
]
[
2018
26
2
2
126-31
]
[
2019
51
8
8
521-2
]
[
2009
36
1-20
]
[
2018
70
6
6
589-97
]
[
2018
131
7
7
873-4
]
[
2009
31
3
3
]
[
2008
9
3
3
141-6
]
[
2014
32
5
5
616-20
]
[
2011
38
7
7
560-4
]
[
2007
98
4
4
268-70
]
[
2007
13
1
1
2
]
[
2010
76
5
5
553-6
]
[
2016
174
6
6
]
[
2009
17
1
1
54-6
]