2413-4341 2413-4341 S2413-43412020000200085 10.18004/rpr/2020.06.02.85 Paraguay 00 12 2020 00 12 2020 6 2 85 87

1 2018 48 318-26 2 2018 14 7-18 3 2019 4 2017 69 857-66 5 2012 33 31-3 6 2007 36 238-45