public function enabled($subspecialty_id = null)
{
$criteria = array('join' => 'LEFT JOIN ophciexamination_postop_complications_subspecialty AS cs ON t.id = cs.complication_id', 'order' => 'cs.display_order');
$criteria['condition'] = 'cs.subspecialty_id = :subspecialty_id';
$criteria['params'] = array('subspecialty_id' => $subspecialty_id);
$this->getDbCriteria()->mergeWith($criteria);
return $this;
}