public function loadModel($id)
 {
     $model = Icd::model()->findByPk($id);
     if ($model === null) {
         throw new CHttpException(404, 'The requested page does not exist.');
     }
     return $model;
 }
 public function actionIcds()
 {
     $icds = Icd::model()->with('patients')->findAll();
     foreach ($icds as $icd) {
         echo $icd->name . '<br>';
         foreach ($icd->patients as $patient) {
             echo $patient->name . '<br>';
         }
         echo '<hr>';
     }
 }