1817-5996 1817-5996 S1817-59962021000300013 Ecuador Ecuador 00 12 2021 00 12 2021 23 3

1 2018 20 3 3 2 2019 21 1 1 3 2017 89 1 1 30-9 4 2018 22 2 2 325-38 5 2021 15 2 2 449-53 6 2018 47 3 3 1-9 7 2020 59 4 4 8 2020 59 2 2 9 2020 40 3 3 260-6 10 2020 22 3 3