d <span class="op">=</span> <span class="fl">2</span>,</span>
<span>        xlab <span class="op">=</span> <span class="st">"Follow-up Time (years)"</span>, ylab <span class="op">=</span> <span class="st">"Hazard Ratio log serum Bilirubin"</span>,</span>
<span>        ylim <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">0.5</span>, <span class="fl">6.4</span><span class="op">)</span><span class="op