1. Department of Epidemiology, School of Public Health, Guilin Medical University, Guilin 541004, China
2. Department of Epidemiology and Health Statistics, Guangxi Medical University, Nanning 530021, China
3. Laboratory of Hepatobiliary and Pancreatic Surgery, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
4. Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin 541001, China