Development of a sensitive prognostic scoring system for the evaluation of severity of acute-on-chronic hepatitis B liver failure: a retrospective cohort study. - Zheng, Yu-Bao; Xie, Dong-Ying; Gu, Yu-Rong; Yan, Ying; Wu, Ye-Bin; Lei, Zi-Ying; Peng, Liang; Xie, Shi-Bin; Gao, Zhi-liang; Ke, Wei-min (Clinical & Investigative Medicine, 2012)