ALB and acute-on-chronic liver failure: ALB, serum albumin; ALT, alanine aminotransferase; AST, aspartate aminotransferase; GFR, glomerular filtration rate; HBV-ACLF, HBV-related acute-on-chronic liver failure; INR, international normalized ratio; Lym, lymphocyte; MELD, model for end-stage liver disease; Ne, neutrophils; PT, platelet; Scr, serum creatinine levels; Tbil, total bilirubin; and WBC, white blood cell.