1. Department of Epidemiology and Biostatistics Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College Beijing China
2. Fourth Department of Liver Disease (Difficult and Complicated Liver Diseases and Artificial Liver Center) Beijing You'an HospitalCapital Medical University Beijing China
3. Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research Beijing China
4. Sam Houston State University Huntsville Texas