1. Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, P.R. China
2. Institute of Adolescent Safety Emergency Education, Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, P.R. China
3. Department of Burns and Plastic Surgery, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin 300163, P.R. China
4. Department of Burns and Plastic Surgery, 983 Hospital of The Joint Logistics Support Force of The Chinese People's Liberation Army, Tianjin 300162, P.R. China