2218-3620 2218-3620 S2218-36202018000500212 República del Ecuador 00 12 2018 00 12 2018 10 5 212 218

2016 1999 2007 2 22 22 43-58 2012 2012 50 3 3 307-14 2014 4 1 1 1370-84 2015 31 2 2 658-66 2017 14 2 2 225-39 2011 2 2 2 219-34 1996 8 2 2 329-35 2005 8 1 1 35-7 2013 20 23-6