2011-7582 2011-7582 S2011-75822021000200344 10.30944/20117582.708 Cuba Cuba 00 06 2021 00 06 2021 36 2 344 345 1 2017 2 4797-804 2 2016 20 87-91 3 2017 2 55-7 4 2016 9 157-60