1560-4381 1560-4381 S1560-43812019000300849 Cuba 00 09 2019 00 09 2019 23 3 849 860

1 1994 2 2009 35 1 1 3 2006 4 2002 5 Ministerio de Salud Pública 2014 6 2013 27 2 2 269-86