2661-6742 2661-6742 S2661-67422023000200001 10.37135/ee.04.17.01 Ecuador Ecuador 00 08 2023 00 08 2023 17 2 1 3

2021 30 17-28 2019 7 3 3 160-4 2007 9 11 11 769-72 1999 173 2 2 279-84 2018 9 2 2 e79-83 2019 213 6 6 1274-83