1990-8644 1990-8644 S1990-86442019000100111 Ecuador 00 03 2019 00 03 2019 15 66 111 115

2012 2010 COLTENE Group 2004 1988 59 3 3 314-8 2012 2004 2007 98 3 3 166-74 2011 4 3 3 106-9 2014 7 12 12 2016 2000 2010 9 2 2 20-30 2013 22 1 1 44-51