1. From the Department of Neurosurgery (C.Q., Y.C., J.Z., Q.C., Z.L.), National Clinical Research Center for Geriatric Disorders (C.Q., Y.C., J.Z., Q.C., Z.L.), Xiangya Hospital, and XiangYa School of Medicine (C.Q., Y.C., C.L., Z.H., L.Y., Y.L., W.L.), Central South University, Changsha, Hunan; Department of Neurosurgery (H.Z.), The Second Affiliated Hospital, Chongqing Medical University; and Department of Oncology (P.L.), Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.