<dt>init</dt>
<dd><p>a numeric vector of initial values for the regression parameters for the hazard regression. 
Default initial value is zero for all variables.</p></dd>


<dt>ties</dt>
<dd><p>a character string describing method for breaking ties in hazard regression. 
Only <code>efron</code>, <code>breslow</code>, or <code>exact</code> is accepted. 
See more details in the documentation for this argument in the survival::coxph function. 
Default to <code>efron</code>.</p></dd>


<dt>...</dt>
<dd><p>addi