2014-9832 2014-9832 S2014-98322021000500275 10.33588/fem.245.1149 Ecuador Ecuador 00 00 2021 00 00 2021 24 5 275 276 1 2007 15 4-11 2 2020 12 45-51 3 2020 156 311-6 4 1999 13 19-27 5 2021 21 34-7