1. Department of Epidemiology, School of Public Health, Nanchang University, Nanchang, China.
2. Department of Cardial Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China.
3. Department of Nosocomial Infection, Cancer Hospital of Jiangxi, Nanchang, China.
4. Drug Adverse Reaction Monitoring Center of Jiangxi, Nanchang, China.