0864-2125 0864-2125 S0864-21252023000200004 Peru 00 06 2023 00 06 2023 39 2 1 2021 1-2 2 2015 78 1 1 1-2 3 2021 16 1 1 1-18 4 2006 91 2 2 5 2020 52 7 7 496-500