on. Valid entries include a start date of a prescription, the date a prescription was filled, or the date on which a Drug administration procedure was recorded.</td>
</tr>
<tr class='odd'>
 <td class='detail'>drug_exposure_end_date</td>
 <td class='detail'>date</td>
 <td class='detail' align='right'>13</td>
 <td class='detail' align='center'></td>
 <td class='detail' align='center'></td>
 <td class='detail'></td>
 <td class='detail'></td>
 <td class='detail'> </td>
 <td class='comment detail'>The end date f