1409-0015 1409-0015 S1409-00152018000200079 Costa Rica Costa Rica 00 12 2018 00 12 2018 35 2 79 83

1 2008 99 456-63 2 2009 31 480-3 3 2014 36 965-71 4 2012 34 e90-3 5 2010 28 73-6 6 2011 33 e7-e10 7 2012 4 10-2 8 2016 43 1074-6 9 2016 43 191-9