Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Department of Critical Care Medicine, The First Affiliated Hospital, Guizhou University of Chinese Medicine, Department of Respiratory Medicine, General Hospital of Southern Theater Command of PLA, Department of Critical Care Medicine, General Hospital of Southern Theater Command of PLA, Southern Medical University, Government of the People's Republic of China - General Hospital of Southern Theater Command, Government of the People's Republic of China - Department of Critical Care Medicine, Department of Anesthesiology, General Hospital of Southern Theater Command of PLA, Government of the People's Republic of China - Department of Critical Care Medicine, Government of the People's Republic of China - Department of Critical Care Medicine, Government of the People's Republic of China - Department of Critical Care Medicine and General Hospital of Southern Theatre Command of PLA - Department of Critical Care Medicine