1. College of Clinical Medicine, Guizhou Medical University, Guiyang, China
2. Department of Hepatic-Biliary-Pancreatic Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
3. Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, China
4. School of Public Health, Guizhou Medical University, Guiyang, China