2215-2458 2215-2458 S2215-24582019000200038 10.15517/isucr.v20i42.41841 Costa Rica 00 12 2019 00 12 2019 20 42 38 71

2000 2001 2014 2000 2001 2015 69 4 4 2015 2010 10 1 1 2003 2000 2019 5 2009 1997