1. Department of Emergency Intensive Care Unit, Huizhou Third People’s Hospital, Guangzhou Medical University , Huizhou , Guangdong Province , China
2. Department of Intensive Care Unit of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute , Guangzhou , Guangdong Province , China
3. Department of Critical Care Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences , Guangzhou , Guangdong Province , China
4. Department of Critical Care Medicine, Maoming People's Hospital , Maoming , Guangdong Province , China
5. The Second School of Clinical Medicine, Southern Medical University , Guangzhou , Guangdong Province , China