2007-5057 2007-5057 S2007-50572019000400123 10.22201/facmed.20075057e.2019.32.19210 Cuba 00 12 2019 00 12 2019 8 32 123 124 1 2019 30 95-109 2 2010 6 20-9 3 2016 30 1 1 23