2218-3620 2218-3620 S2218-36202018000100214 República del Ecuador 00 03 2018 00 03 2018 10 1 214 219

2013 49 2 2 65-8 2014 6 5 5 460-6 2017 43 1 1 2011 36 5 5 756-9 2013 30 3 3 201-6 2016 44 1 1 64-75 2017 29 2 2 129-33 2016 55 9 9 1005-13 2013 15 7 7 600-4 2010 3 23 23 2015 18 1 1 11-4 2013 30 4 4 283-7