1990-8644 1990-8644 S1990-86442022000200198 Ecuador 00 04 2022 00 04 2022 18 85 198 202

2016 13 26 26 13-29 2013 89 6 6 663-83 2000 9 1 1 1-14 2018 2004 2019 58 33 33 11182-204 2016 427-37 2010 36 1 1 53-5 2009 37 9 9 658-65 2020 28 718-40