public function deleteAction()
 {
     if (!$this->_hasParam('id')) {
         return $this->_redirect('/especialidades');
     }
     $items = new Application_Model_Specialties();
     $row = $items->getRow($this->_getParam('id'));
     if ($row) {
         $row->delete();
     }
     return $this->_redirect('/especialidades');
 }