1028-9933 1028-9933 S1028-99332023000100056 Ecuador 00 00 2023 00 00 2023 102

1 2016 16 1 1 2 2013 3 2 2 80-2 3 2018 98 5 5 973-93 4 2020 2 3 3 5 2015 9 11 11 8-10 6 2015 2015 7 2015 210 2 2 201-10 8 2018 4 1 1 9 2017 12 3 3 504-7 10 2020 20