1870-4670 1870-4670 S1870-46702011000200173 Spain 00 12 2011 00 12 2011 13 173 179 1994 2 2 201-10 2010 2005 23 2 2 2010 31 4 4 705 y 706 1991 10 2 2 10 2006 2006 2007 2009 12 12 2009 2009 2007 2010 1982 5 5 424