0034-7507 0034-7507 S0034-75072021000400017 Cuba 00 12 2021 00 12 2021 58 4

1 2020 19 2 2 2 2020 10 2 2 3 2020 4 2020 10 2 2 5 2011 6 2012 23 4 4 346-61 7 2020 39 2 2 8 2020 9 2015 8 8 10 2020 12 3 3 3-4 11 2015