public static function DeleteByMeetingID($MEETING_ID)
 {
     global $DB;
     $MEETING_ID = intval($MEETING_ID);
     if ($MEETING_ID < 1) {
         return false;
     }
     CMeetingReports::DeleteByMeetingID($MEETING_ID);
     $DB->Query("DELETE FROM b_meeting_instance_users WHERE MEETING_ID='" . $MEETING_ID . "'");
     if ($DB->Query("DELETE FROM b_meeting_instance WHERE MEETING_ID='" . $MEETING_ID . "'")) {
         CMeetingItem::DeleteAbandoned();
         return true;
     }
     return false;
 }