[1] Chinese Univ Hong Kong, Dept Surg, Div Neurosurg, Hong Kong, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Dept Anat & Cellular Pathol, Hong Kong, Hong Kong, Peoples R China
[3] Chinese Univ Hong Kong, Dept Orthoped & Traumatol, Hong Kong, Hong Kong, Peoples R China
[4] Chinese Univ Hong Kong, Dept Clin Oncol, Hong Kong, Hong Kong, Peoples R China