2528-7907 2528-7907 S2528-79072020000300048 10.36097/rsan.v1i40.1257 Cuba Cuba 00 09 2020 00 09 2020 40 48 60

2000 31 1-2 1-2 1991 1994 27 1 1 13 Cuba, E. n 2019 2010 1995 2018 Innguma 2019 2011 Organization, I. S 2008 Organization, I. S 2015 2009 2018 2016 UNE 2006 UNE 2011 UNE 2018