1. Emergency Department, Suzhou Emergency Center, Suzhou, Jiangsu 215008, P.R. China
2. Department of Anesthesiology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215008, P.R. China
3. Laboratory Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu 215008, P.R. China
4. Dispatch Department, Suzhou Emergency Center, Suzhou, Jiangsu 215000, P.R. China