; <span style="color: #BCBCBC;">1</span> initial cohort         128    128 <span style="color: #949494;">""</span>        <span style="color: #BB0000;">NA</span>      <span style="color: #BB0000;">NA</span>             <span style="color: #BB0000;">NA</span>         </span></span>
<span><span class="co">#&gt; <span style="color: #BCBCBC;">2</span> study cohort            43     89 <span style="color: #949494;">"</span>placebo<span style="color: #949494;">"</span> placebo <span style="color: #BB0000;">NA</sp