0034-7531 0034-7531 S0034-75312020000100012 Cuba Cuba 00 03 2020 00 03 2020 92 1

1 2018 3 Suppl 1 Suppl 1 2 2016 20 2 2 3 2008 60 1 1 40-7 4 1993 42 2 2 97-101 5 2014 3 3 6 2015 109 1 1 19 7 2017 11 9 9 8 2012 4 3 3 9 2011 30 5 5 449-50