1816-8949
1816-8949
S1816-89492020000100107
10.18004/anales/2020.053.01.107-111
Paraguay
00
04
2020
00
04
2020
53
1
107
111
[
1964
]
[
2015
56
1
1
81-90
]
[
2008
118
1
1
48-53
]
[
2000
21
9
9
1574-85
]
[
2015
2
76-9
]
[
2015
323-32
]
[
2014
]
[
2015
8697
1-5
]
[
2015
]
[
2014
]
[
2016
3
]
[
2016
1
62-6
]