2528-7907 2528-7907 S2528-79072017000200102 Ecuador 00 12 2017 00 12 2017 1 19 102 113

2001 1-41 2010 98-741 1996 2011 98-743 2001 2006 443-52 2015 97-118 2001 9-20 2012 131-8 2003 6-13