1817-5996 1817-5996 S1817-59962022000100014 Ecuador 00 04 2022 00 04 2022 24 1

1 2020 80 4 4 554-61 2 2019 35 1 1 22-9 3 2020 35 3 3 176-84 4 2020 83 2 2 104-9 5 2020 20 3 3 489-93 6 2020 92 4 4 7 2018 83 5 5 507-12 8 2018 34 1 1 54-8 9 2021 4 1 1