1816-8949
1816-8949
S1816-89492020000300173
10.18004/anales/2020.053.03.173
Paraguay
00
12
2020
00
12
2020
53
3
173
176
[
2010
78
6
6
556-62
]
[
2018
10
4
4
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5991924/
]
[
2013
57
1
1
25-8
]
[
2019
12
4
4
]
[
2005
]
[
2015
19
2
2
110-1
]
[
2016
1
2
2
79-84
]
[
2019
10
15
]
[
2014
27
1
1
137-41
]
[
2018
97
44
44
]
[
2014
47
4
4
245-50
]