1 Department of Emergency Medicine, the First Affiliated Hospital of Hunan Normal University (People's Hospital of Hunan Province), Changsha 410005, China.
2 Clinical Research Center For Emergency and Critical Care in Hunan Province, Changsha 410005, China.
3 Hunan Provincial Institute of Emergency Medicine, Changsha 410005, China.
4 Hunan Provincial Key Laboratory of Emergency and Critical Care Metabonomics, Changsha 410005, China.