1817-5996 1817-5996 S1817-59962023000400001 Ecuador Ecuador Ecuador Cuba 00 12 2023 00 12 2023 25 4

1 2020 148 6 6 852-7 2 2020 22 4 4 3 2021 221 7 7 408-10 4 5 15-1 1- 20 274 274 6 2021 28 4 4 207-9 7 2019 21 2 2 8 2018 9 2002