1. Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China.
2. Department of Anesthesiology, Xuzhou Municipal Hospital Affiliated with Xuzhou Medical University, Xuzhou, China.
3. Faculty of Emergency Rescue Medicine, Xuzhou Medical University, Xuzhou, China.
4. Emergency Center of the Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.