1. Third Department of Infectious Diseases, Huoshenshan Hospital, Joint Logistics Support Force of The Chinese People's Liberation Army, Wuhan, Hubei 430101, P.R. China
2. Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shanxi 710038, P.R. China
3. Department of Neurosurgery, The Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330008, P.R. China