1. Department of Emergency Nanfang Hospital, Southern Medical University Guangzhou China
2. Department of Stomatology The People’s Hospital of Longhua Shenzhen China
3. Department of Cadre’s Ward The First Affiliated Hospital of Fujian Medical University Fuzhou China
4. Department of Gastroenterology, Guangdong Provincial Key Laboratory of Gastroenterology Nanfang Hospital, Southern Medical University Guangzhou China
5. Department of Emergency and Critical Care Medicine Guangdong General Hospital & Guangdong Academy of Medical Sciences Guangzhou China