1990-8644 1990-8644 S1990-86442020000300193 Ecuador Ecuador Cuba 00 06 2020 00 06 2020 16 74 193 200

2014 27 15−24 Chile. Centro Interuniversitario de Desarrollo 2008 2019 11 3 3 292-306 2015 14 3 3 93-105 2002 2012 2003 2010 2014 258 231-47 2012 2019 11 5 5 437-46 2007 2009 43 3 3 2010 2015 2015 5 1 1 2012 12 1-18 2015 23 1 1 9-17 2010 22 2 2 91-116 2009 43 3 3