1. State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, PR China
2. Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, PR China
3. Hospital Infection-Control Department, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, PR China