Department of Orthopedics, PLA 115th Hospital, Linzhi, Tibet 860000, China;
Department of Neurosurgery, PLA 115th Hospital, Linzhi, Tibet 860000, China;
Department of Neurosurgery, PLA 115th Hospital, Linzhi, Tibet 860000, China;
Department of Neurosurgery, PLA 115th Hospital, Linzhi, Tibet 860000, China;