IGF1 and hepatocellular carcinoma: IGF-1, insulin-like growth factor 1; LT, liver transplantation; ECD, extended criteria donor; DMELD, donor age x Model for End Stage Liver Disease; EAD, early allograft dysfunction; DRI, Donor Risk Index; HCV, hepatitis C virus; HCC, hepatocellular carcinoma; POD, postoperative day.