nts_fk_subject_id<span title='Restrict delete:
 Parent cannot be deleted if children exist'>&nbsp;R</span></td>
   </tr>
   <tr class='relative even' valign='top'>
    <td class='relatedTable detail' title="diagnoses_icd.subject_id refs patients.subject_id via diagnoses_icd_fk_subject_id"><a href='diagnoses_icd.html'>diagnoses_icd</a><span class='relatedKey'>.subject_id</span>
    </td>
    <td class='constraint detail'>diagnoses_icd_fk_subject_id<span title='Restrict delete:
 Parent cannot be deleted if ch