1. Center for Evidence-Based Medicine and Clinical Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, P.R. China
2. Department of Emergency, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, P.R. China
3. Department of Anesthesia Surgery, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, P.R. China