Cluster 27: platelets ml days dl consent surgery chemistry documented total study Cluster 37: bilirubin mg dl direct equal unless ml considered total tumor Cluster 124: total bilirubin mg dl serum days equal uln ml enrollment Cluster 1123: mol mg dl creatinine serum bilirubin si total function male Cluster 1459: bilirubin mg dl serum direct umol patients total days prior Cluster 2220: total bilirubin normal direct dl mg age elevated check conjugated