1. Intensive Care Unit, Hospital of Zhejiang People's Armed Police, Hangzhou, Zhejiang, China
2. The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
3. The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
4. Basic Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China