0864-0289 0864-0289 S0864-02892019000400010 Cuba 00 12 2019 00 12 2019 35 4 1 2006 344 2 2015 3 2016 32 3 3 0 4 2018 31 4 4 5 2015 4 1 1 39-45 6 2017 7 1 1 33-42 7 2015 4 1 1 12-6