Correction: Liu, Y.-S.; et al. Inhibition of Protein Phosphatase 1 Stimulates Noncanonical ER Stress eIF2α Activation to Enhance Fisetin-Induced Chemosensitivity in HDAC Inhibitor-Resistant Hepatocellular Carcinoma Cells. This evidence concerns the gene HDAC9 and hepatocellular carcinoma.