1815-7696 1815-7696 S1815-76962020000300588 Cuba 00 09 2020 00 09 2020 18 3 588 598

2017 35 35 8-19 2014 2019 11 4 4 107-20 2017 13 2 2 278-88 2018 9 1 1 83-7 2015 41 1 1 337-49 2015 6 1 1 31-41 Ministerio de Educación Superior 2019 2017 30 30 149-69 2018 14 64 64 54-62 2010 15 15 2019 11 214-24