Cluster 26: obtained registration uln days prior bilirubin creatinine total upper normal Cluster 31: total bilirubin upper limit normal uln age range serum days Cluster 700: conjugated sum unconjugated age bilirubin upper limit normal uln total Cluster 848: bilirubin uln gilbert level enrolled total serum known upper limit Cluster 900: institutional bilirubin upper total uln normal limit level days registration Cluster 961: institutional bilirubin upper normal limit total age direct registration serum Cluster 1524: indicated renal creatinine function adequate uln insufficiency upper level limit Cluster 1640: bilirubin uln equal conjugated mla institutional needs level transaminases phase Cluster 1926: iuln bilirubin total registration direct patients days prior arm cohort Cluster 1979: administration institutional upper limit normal uln measured total bilirubin days Cluster 2202: creatine phosphokinase ck cpk uln kinase plasma normal upper limit