
       </td>
       <td>
        For articles corrected following publication, this field specifies the
correction. Generally, if the correction text is specified, the
correction date will also be specified (and vice versa).
       </td>
       <td>
        optional
       </td>
       <td>
       </td>
      </tr>
      <tr>
       <td>
        10
       </td>
       <td>
        credit
       </td>
       <td>
        <code>
         string
        </code>
       </td>
       <td>
        This field indi