Institution: | 1. Department of Neurosurgery, Qingdao Huangdao District People''s Hospital, Qingdao, China;2. Department of Neurosurgery, Qingdao West Coast New District People''s Hospital, Qingdao, China;3. Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao, China;4. Intensive Care Unit, Qingdao Huangdao District People''s Hospital, Qingdao, China |