1 Department of Emergency Medicine, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, 445000, China.
2 Department of Emergency Center, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, 445000, China.
3 Department of Emergency Medicine, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, 445000, China. Electronic address: w6311@yeah.net.