public function findAllOptionsForSubspecialty($subspecialty_id = null)
{
$condition = 'attribute_element_id = :attribute_element_id AND ';
$params = array(':attribute_element_id' => $this->id);
if ($subspecialty_id) {
$condition .= '(subspecialty_id = :subspecialty_id OR subspecialty_id IS NULL)';
$params[':subspecialty_id'] = $subspecialty_id;
} else {
$condition .= 'subspecialty_id IS NULL';
}
return OphCiExamination_AttributeOption::model()->findAll($condition, $params);
}