ss='op'>+</span>
  <span class='fu'><a href='obs_additive.html'>obs_additive</a></span><span class='op'>(</span><span class='op'>~</span><span class='va'>wt</span><span class='op'>)</span>

<span class='co'># EMAX dose-response model with proportional RUV</span>
<span class='va'>m2</span> <span class='op'>&lt;-</span> <span class='fu'><a href='model.html'>model</a></span><span class='op'>(</span><span class='op'>)</span> <span class='op'>+</span>
  <span class='fu'><a href='input_variable.html'>input_variab