1692-1798 1692-1798 S1692-17982021000200150 10.15332/iteckne.v18i2.2610c Ecuador Ecuador 00 12 2021 00 12 2021 18 2 150 160

[1] 2020 118 October 2019 October 2019 1057-62 [2] 2021 2 266-79 [3] 2020 200 106928 [4] 2017 12 3 3 2664-75 [5] 2018 101 331-8 [6] 1997 13 2 2 636-42 [7] 2016 31 6 6 4901-12 [8] 2020 69 3 3 581-94 [9] 2015 31 3 3 2234-45 [10] 2021 25 100417 [11] 2014 29 4 4 1592-601 [12] 2019 14 4 4 14631472 [13] 2013 28 3 3 3471-9 [14] 2020 189 106601 [15] 2020 . 8 82630-40 [16] 2019 239 1250-64 [17] 2009 [18] 2021 1-17 [19] 2020 182 106208 [20] 2021 193 107017 [21] 2011 5 3 3 360-7 [22] 2013 7 9 9 955-64 [23] 2020 16 2 2 [24] 2019 172 22-31 [25] 2016 140 769-75 [26] 2013 . 140 2 2 239-66 [27] 2020 35 6 6 4564-73 [28] 2015 30 4 4 1838-47 [29] 2012 86 98-112 [30] 2013 40 1 1 9-23 [31] 2018 33 6 6 6924-34 [32] 2020 276 115472 [33] 2005 20 3 3 1616-21 [34] 151 3 3 201-12 [35] 2018 12 9 9 2105-14 [36] 2016 134 19-29 [37] 2014 29 5 5 2087-96