1794-4449 1794-4449 S1794-44492021000100158 10.22507/rli.v18n1a10 Ecuador Ecuador Ecuador 00 06 2021 00 06 2021 18 1 158 172

2017 2017 12 2 2 1-12 1953 2014 1-17 2017 2015 20 20 2-29 2013 1-12 2017 31 2 2 1-3 2018 4 4 4 1-10 2018 75 263-86 2018 75 263-86 2015 18 55 55 16-22 1984 2007 2008 21 35 35 93-126 2010 27 74 74 31-46 2010 56 56 15-40 2004 INEC 2010 INEC 2011 INEC 2016 International Organization for Standardization 2010 2010 10 1 1 101-14 2018 2004 9 8 8 69-74 2012 30 1 1 170-81 2017 2015 11 2 2 72-90 2016 24 35 35 137-53 2020 6 1 1 396-428 2010 12 2 2 248-52 2014 15 38 38 599-624 2017 14 14 14 145-70 2015 1-23 2010