Wuhong Zheng1,2,3,4, Yonghuo Ye5, Haijun Zhou6,7,8,9. 1. Department of Emergency, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fujian Medical University, 134 East Street, Fuzhou, 350001, Fujian, People's Republic of China. zhengwuhong@sohu.com. 2. Fujian Provincial Institute of Emergency Medicine, Fuzhou, Fujian, People's Republic of China. zhengwuhong@sohu.com. 3. Fujian Emergency Medical Center, Fuzhou, Fujian, People's Republic of China. zhengwuhong@sohu.com. 4. Fujian Provincial Key Laboratory of Emergency Medicine, Fuzhou, Fujian, People's Republic of China. zhengwuhong@sohu.com. 5. Department of Cardiovascular Surgery, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fujian Medical University, Fuzhou, Fujian, People's Republic of China. 6. Department of Emergency, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fujian Medical University, 134 East Street, Fuzhou, 350001, Fujian, People's Republic of China. 7. Fujian Provincial Institute of Emergency Medicine, Fuzhou, Fujian, People's Republic of China. 8. Fujian Emergency Medical Center, Fuzhou, Fujian, People's Republic of China. 9. Fujian Provincial Key Laboratory of Emergency Medicine, Fuzhou, Fujian, People's Republic of China.