1817-5996 1817-5996 S1817-59962023000200007 Ecuador 00 06 2023 00 06 2023 25 2

1 2019 36 334-40 2 2020 148 11 11 1606-13 3 2021 4 2019 5 2022 3 20 20 10-1 6 2021 7 2019 31 2 2 49-58 8 2021 9 2019 10 2021