2072-8174 2072-8174 S2072-81742019000200114 10.18004/rdn2019.0011.02.114-118 Paraguay 00 12 2019 00 12 2019 11 2 114 118

1 2015 30 1 1 134-7 2 2017 6 2 2 159-63 3 2018 37 134 134 11-8 4 2017 27 1 1 57-60 5 2014 2014 1-4 6 2007 58 3 3 249-53 7 2008 14 5 5 493-95