1. The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
2. Graduate school, Guangzhou University of Chinese Medicine, Guangzhou, China
3. Department of Intensive Care Unit, Huizhou First People’s Hospital, Huizhou, China
4. Department of Intensive Care Unit, General Hospital of Southern Theatre Command of PLA, Guangzhou, China
5. Department of Intensive Care Unit, Longgang Central Hospital of Shenzhen, Shenzhen, China
6. Department of Critical Care Medicine, Shenzhen People’s Hospital, Shenzhen, China
7. Shenzhen Clinical Medical College, Guangzhou University of Chinese Medicine, Shenzhen, China
8. Department of Emergency Medicine, General Hospital of Southern Theatre Command of PLA, Guangzhou, China