1. Department of Emergency Medicine, Southwest Hospital, Army Medical University, Chongqing, China.30 Main Street, Gaotan Rock, Chongqing 400038, People’s Republic of China
2. Department of Emergency Medicine, The General Hospital of Western Theater Command of PLA, Chengdu, China. 270 Rongdu Avenue, Jinniu District, Chengdu 610000, People’s Republic of China
3. Institute of Combined Injury, College of Preventive Medicine, Army Military Medical University, Chongqing, China.30 Main Street, Gaotan Rock, Chongqing 400038, People’s Republic of China