Corrigendum: Inflammatory Stress Potentiates Emodin-Induced Liver Injury in Rats - Tu, Can; Gao, Dan; Li, Xiao-Fei; Li, Chun-Yu; Li, Rui-Sheng; Zhao, Yan-Ling; Li, Na; Jia, Ge-Liu-Chang; Pang, Jing-Yao; Cui, He-Rong; Ma, Zhi-Jie; Xiao, Xiao-He; et al. (Frontiers in Pharmacology, 2021)