0864-0319 0864-0319 S0864-03192020000400001 Peru 00 12 2020 00 12 2020 36 4 1 2019 35 4 4 2 2016 3 2018 28 6 6 387-93 4 2017 19 5 5 301-8 5 2018 10 12:1-4 6 2016 147 6 6 262-6 7 2015 67 3 3 325-30 8 2019 30 1 1 33-7 9 2017 8 164-70