1. Department of Emergency Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
2. Intensive Care Unit, Wuming Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
3. Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
4. Department of Physiology, Guangxi Medical University, Nanning, Guangxi, People’s Republic of China