1. Hunan Provincial Key Laboratory of Clinical Epidemiology Central South University Changsha China
2. Department of Epidemiology and Biostatistics, Xiangya School of Public Health Central South University Changsha China
3. The First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou Key Laboratory of Sepsis Henan Engineering Research Center for Critical Care Medicine Zhengzhou China
4. Zhengzhou University School of Pharmaceutical Sciences Zhengzhou China
5. School of Nursing Zhengzhou University Zhengzhou China
6. Department of Health Policy and Management, School of Management Jiangsu University Zhenjiang China
7. Department of General Surgery, Xiangya Hospital Central South University Changsha China
8. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital Central South University Changsha China
9. Department of Gynecology, Xiangya Hospital Central South University Changsha China