1. Department of Emergency Medicine Center, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan 610000, P. R. China
2. Central People’s Hospital of Zhanjiang, Zhanjiang, Guangdong 524045, P. R. China
3. Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610000, P. R. China