1. Department of Infectious Diseases, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China;
2. Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China; and
3. Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, Hunan, China.