2007-5057 2007-5057 S2007-50572021000400106 10.22201/fm.20075057e.2021.40.21391 Peru 00 12 2021 00 12 2021 10 40 106 107 1 2011 2 2019 41 166 166 124-40 3 2020 23 1 1 169-82 4 2020 23 1 1 85-109