document.write('<table width=680 border=0 cellspacing=0 cellpadding=0><tr><td width=135 valign=top><a href=http://www.ncbi.nlm.nih.gov/ target=_blank><img src=gifs/logo_nbci.gif alt=http://www.ncbi.nlm.nih.gov/ width=110 height=82 border=0></a><table width=110 border=0 cellpadding=0 cellspacing=0 bgcolor=#EAEAEA><tr><td height=55 align=center class=text><strong>MEDLINE</strong></td></tr><tr><td><img src=gifs/cierre.gif width=110 height=4></td></tr></table></td><td width=136 valign=top><a href=http://www.cochrane.org/ target=_blank><img src=gifs/logo_cochrane.gif alt=http://www.cochrane.org/ width=110 height=82 border=0></a><table width=110 border=0 cellpadding=0 cellspacing=0 bgcolor=#EAEAEA><tr><td height=55 align=center class=text><strong>COCHRANE </strong></td></tr><tr><td><img src=gifs/cierre.gif width=110 height=4></td></tr></table></td><td width=136 valign=top><a href=http://www.vademecum.es/ target=_blank><img src=gifs/logo_vademecum.gif alt=http://www.vademecum.es/ width=110 height=82 border=0></a><table width=110 border=0 cellpadding=0 cellspacing=0 bgcolor=#EAEAEA><tr><td height=55 align=center class=text><strong>VADEMECUM </strong></td></tr><tr><td><img src=gifs/cierre.gif width=110 height=4></td></tr></table></td><td width=136 valign=top><a href=http://www.seom.org/ target=_blank><img src=gifs/logo_seom.gif alt=http://www.seom.org/ width=110 height=82 border=0></a><table width=110 border=0 cellpadding=0 cellspacing=0 bgcolor=#EAEAEA><tr><td height=55 align=center class=text><strong>SEOM </strong></td></tr><tr><td><img src=gifs/cierre.gif width=110 height=4></td></tr></table></td><td valign=top><a href=http://www.todocancer.com/esp target=_blank><img src=gifs/todocancer1.gif alt=http://www.todocancer.com/esp width=160 height=82 border=0></a><table width=161 border=0 cellpadding=0 cellspacing=0 bgcolor=#EAEAEA><tr><td height=55 align=center class=text><strong>Asociaci&oacute;n espa&ntilde;ola contra el cancer</strong></td></tr><tr><td><img src=gifs/cierre.gif width=110 height=4></td></tr></table></td></tr></table>')