1. Department of Emergency Medicine, Nanfang Hospital Southern Medical University Guangzhou China
2. Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital Southern Medical University Guangzhou China
3. Department of Respiratory and Critical Care Medicine, Nanfang Hospital Southern Medical University Guangzhou China
4. Ministry of Education, Key Laboratory of Hainan Trauma and Disaster Rescue, College of Emergency and Trauma Hainan Medical University Haikou China