1. College of Emergency Trauma, Hainan Medical University, Haikou, China
2. Key Laboratory of Hainan Trauma and Disaster Rescue, the First Affiliated Hospital of Hainan Medical University, Haikou, China
3. Key Laboratory of Emergency and Trauma Ministry of Education, Hainan Medical University, Haikou, China
4. Danzhou People's Hospital, Danzhou, China