1990-8644 1990-8644 S1990-86442020000200357 Ecuador 00 06 2020 00 06 2020 16 73 357 363

2009 114 114 1-12 2019 2011 4 4 11-5 2013 Madrid, España 2010 New York 2010 2009 8 60-83 2004 16 78 78 2013 51 1 1 85-117 2017 134 134 151-62 2014 20 1 1 249-64 2016 1 1 1-33