1817-5996 1817-5996 S1817-59962019000300009 Ecuador Ecuador Ecuador Ecuador Ecuador 00 12 2019 00 12 2019 21 3

1 2004 11 94-102 2 2012 50 1 1 113-6 4 2006 4 1 1 3-18 5 2008 39 1 1 87-9 6 2007 2 2 2 45-8 9 2014 28 5 5 265-72 13 2007 10 80-93 15 2004 11 94-102