1815-7696 1815-7696 S1815-76962020000400729 Cuba 00 12 2020 00 12 2020 18 4 729 745

2017 15 3 3 49-61 2017 31-8 2013 18 185 185 2019 119 2018 66 ^s1 ^s1 1 PCC 2017 2017 14 45 45 297-311 2017 26 51 51 35-54 2017 13 2016 16 54 54 11-24 1989