2218-3620 2218-3620 S2218-36202021000200217 Ecuador Ecuador 00 04 2021 00 04 2021 13 2 217 227

2009 2016 71 71 2008 1967 2007 2009 2012 15 1 1 120-6 2013 27 3 3 288-95 2012 46 84 84 2020 2016 12 1 1 55-70 2011