1560-4381 1560-4381 S1560-43812019000401460 Cuba 00 12 2019 00 12 2019 23 4 1460 1469 1 2017 2da 2 2017 21 2 2 1-6 3 2017 14 1 1 227-43 4 2017 6 4 4 5 2006 38 7 7 1-7