anchor.diff:              plotHistogram('dfs-hist',dt,headerMap['disease_free_survival_months'],[12,24,36,48,60],'Disease-free survival months');
               plotPieChart('gender-pie',dt,headerMap['gender']);
               plotPieChart('hist-pie',dt,headerMap['histology']);
  +            plotPieChart('ovs-pie',dt,headerMap['overall_survival_status']);
  +            plotPieChart('dfs-pie',dt,headerMap['disease_free_survival_status']);
               plotPieChart('stage-pie',dt,headerMap['2009stagegroup']);
               plotPieChart('grade-pie',dt,headerMap['tumor_grade']);
               
  
positive.code:         </td>
          <td>
              <fieldset>
                  <legend style="color:blue;font-weight:bold;">Histology</legend>
                  <div id="hist-pie" class="small-plot-div">
                      <img src="images/ajax-loader.gif"/>
                  </div>
              </fieldset>
          </td>
      </tr>
      <tr>
          <td>
              <fieldset>
                  <legend style="color:blue;font-weight:bold;">Disease-Free Survival Months</legend>
                  <div id="dfs-hist" class="small-plot-div">
                      <img src="images/ajax-loader.gif"/>
                  </div>
              </fieldset>
          </td>
          <td>
              <fieldset>
                  <legend style="color:blue;font-weight:bold;">Grade</legend>
                  <div id="grade-pie" class="small-plot-div">
                      <img src="images/ajax-loader.gif"/>
                  </div>
              </fieldset>
          </td>
          <td>
              <fieldset>
                  <legend style="color:blue;font-weight:bold;">Stage</legend>
                  <div id="stage-pie" class="small-plot-div">
                      <img src="images/ajax-loader.gif"/>
                  </div>
              </fieldset>
          </td>
          <td>
              
          </td>
      </tr>
      
  </table>
  
  
negative.code:     <tr>
          <td>
              <fieldset>
                  <legend style="color:blue;font-weight:bold;">Age at Diagnosis</legend>
                  <div id="age-hist" class="small-plot-div">
                      <img src="images/ajax-loader.gif"/>
                  </div>
  