n)</p></li>
<li><p>SDESIGN       (character)<br>
If multiple TSPARMCD 'SDESIGN' values are extracted for a studies, all the
values are merged into a comma separated string.</p></li>
<li><p>UNCERTAIN_MSG (character)<br>
Included when parameter <code>inclUncertain=TRUE</code>.<br>
Contains indication of whether STSTDTC is missing or has wrong
format.<br>
Is NA for rows where SDESIGN is valid.<br>
A non-empty UNCERTAIN_MSG value generated by this function is merged with
non-empty UNCERTAIN_MSG values which may