1. Emergency Department, Tai'an Traditional Chinese Medicine Hospital, Tai'an, Shandong 271000, P.R. China
2. Department of ICU, Affiliated Hospital of Taishan Medical University, Tai'an, Shandong 271000, P.R. China
3. Department of Neurosurgery, Affiliated Hospital of Taishan Medical University, Tai'an, Shandong 271000, P.R. China