1. The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
2. Department of Immunology, Zhejiang Provincial Center for Disease Control and prevention, Hangzhou, Zhejiang, China
3. Department of Quality Management, Zhejiang Hospital, Hangzhou, Zhejiang, China
4. Department of Information, Jingdezhen Center for Disease Control and prevention, Jingdezhen, Jiangxi, China