1990-8644 1990-8644 S1990-86442023000100320 Ecuador 00 02 2023 00 02 2023 19 90 320 325

2022 2007 5 4 4 430-48 2018 37 2 2 52-61 2009 467-70 2021 2012 2019 14 1 1 39-50 2022 2 1 1 486-97 2022 2006 2022 47 2022 2022 2022 3 122-36 2022 10 14 14