Progressive numbness and weakness of extremities for four years
XU Yin-yan, ZHANG Jiang-tao, NIU Jing-wen, NI Jun, CUI Li-ying
Chinese Journal of Contemporary Neurology and Neurosurgery . 2017, (1): 74 -78 .  DOI: 10.3969/j.issn.1672-6731.2017.01.014