1816-8949
1816-8949
S1816-89492021000300173
10.18004/anales/2021.054.03.173
Paraguay
00
12
2021
00
12
2021
54
3
173
178
[
2009
124
6 Suppl
6 Suppl
e340-50
]
[
1994
15
9
9
618-23
]
[
2005
115
7
7
1813-29
]
[
2014
30
3
3
145-52
]
[
2020
8
5
5
]
[
1999
104
2
2
357-65
]
[
2021
41
6
6
569-73
]
[
1993
46
3
3
223-7
]
[
2007
108
2
2
120-7
]
[
2001
108
6
6
1639-45
]