public function relations()
{
return array('siteSubspecialtyAssignments' => array(self::HAS_MANY, 'SiteSubspecialtyAnaestheticAgent', 'anaesthetic_agent_id'), 'siteSubspecialtyAssignmentDefaults' => array(self::HAS_MANY, 'SiteSubspecialtyAnaestheticAgentDefault', 'anaesthetic_agent_id'));
}