1870-199X 1870-199X S1870-199X2007000400166 Spain 00 00 2007 00 00 2007 11 4 166 167 1. 2003 2. DentEd 3. 2005 L255 L255 0022-142 4. 2005 9 98107 5. 2006 10 123-30 6. 2007 11 125-36 7. 2003 7 143-6