get related product short description

<?php foreach($this->getItems() as $_item): ?>
  <?php # method 1 ?>
  <?php echo $this->escapeHtml($_item->getShortDescription()) ?>
  <?php # method 2 ?>
  <?php echo $this->helper('catalog/output')->productAttribute($_item, nl2br($_item->getShortDescription()), 'short_description'); ?>
<?php endforeach ?>