[Chan, A. K.; Li, Y. X.; Zhang, R. Q.; Yang, R. R.; Li, K. K.; Chung, N. Y.; Ng, H. K.] Chinese Univ Hong Kong, Prince Wales Hosp, Fac Med, Dept Anat & Cellular Pathol, Hong Kong, Hong Kong, Peoples R China; [Aibaidula, A.; Shi, Z. F.; Zhou, L. F.; Wu, J. S.; Chen, H.] Fudan Univ, Huashan Hosp, Dept Neurosurg, Shanghai, Peoples R China