1. Department of Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, Anhui, China
2. Department of Critical Care Medicine, the Affiliated Yixing People's Hospital of Jiangsu University, Jiangsu, China
3. Department of Emergency and Critical Care Medicine, Shanghai Changzheng Hospital, Shanghai, China
4. Department of Emergency and Critical Care Medicine, the People's Hospital of Hangzhou City, ZheJiang, China
5. Department of Anesthesiology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Jiangsu, China
6. Department of Respiratory Medicine, the First Affiliated Hospital of Anhui Medical University, Anhui, China