Quantitative assessment of postural instability in spinocerebellar ataxia type 3 patients oleh Xia‐Hua Liu, Ying Li, Hao‐Ling Xu, Arif Sikandar, Wei‐Hong Lin, Gui‐He Li, Xiao‐Fen Li, Alimire Alimu, Sheng‐Bin Yu, Xiang‐Hui Ye, Ning Wang, Jun Ni, Wan‐Jin Chen, Shi‐Rui Gan