1 School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, 13th Hangkong Road, Wuhan, 430030, PR China.
2 Emergency Department, West China Hospital, Sichuan University, Chengdu, 610041, PR China.
3 Department of Emergency Medicine, Thomas Jefferson University Hospital, 1025 Walnut Street, 808 College Building, Philadelphia, PA19107, USA.
4 Office of Health Emergency(Center for Public Health Emergency), National Health and Family Planning Commission of the People's Republic of China, 1st Xizhimenwainan Road, Beijing, 100044, PR China.
5 School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, 13th Hangkong Road, Wuhan, 430030, PR China. Electronic address: zhangliang@mails.tjmu.edu.cn.