anchor.diff:                  $("#link-samples-table").click();
               });
               
  -        } else {
  +        } else if (n > 1) {
               $("#clinical_div").append(svg_corner + head_recs.replace(/, <\/div>$/, "</div>"));
           }
  -        addMoreClinicalTooltip("#more-patient-info");
  -        addMoreClinicalTooltip(".more-sample-info");
  +        if (patientInfo.length > 0) {
  +            addMoreClinicalTooltip("#more-patient-info");
  +        }
  +        if (clinicalDataMap.length > 0) {
  +            addMoreClinicalTooltip(".more-sample-info");
  +        }
               
       
       } else {
  
positive.code: 
              row += "</td><td align='right'><a href='#' class='more-clinical-a' alt='"+caseId+"'>More about this tumor</a></td></tr>";
              $("#clinical_table").append(row);
  
          }
      }
  
negative.code:             }
              sample_recs += "<b><u><a style='color: #1974b8;' href='"+cbio.util.getLinkToSampleView(cancerStudyId,caseId)+"'>"+caseId+"</a></b></u><a>&nbsp;"
              
              var sampleData = {};
              if (clinicalDataMap.length > 0) {
                  sampleData = {"SAMPLE_TYPE":clinicalDataMap[caseId].SAMPLE_TYPE || "N/A",
                                "METASTATIC_SITE":clinicalDataMap[caseId].METASTATIC_SITE || "N/A",
                                "PRIMARY_SITE":clinicalDataMap[caseId].PRIMARY_SITE || "N/A"};
              }
              var info = [];
              info = info.concat(formatStateInfo(sampleData));
              sample_recs += info.join(",&nbsp;");
  