Department of Neurology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.

Address correspondence to Shilei Cui, MD, PhD, Department of Neurology, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaominxiang Street, Dongcheng District, Beijing, China; E-mail: [email protected]

The authors report no conflicts of interest.

Xuefei Liu and Yunqing Wu are co– first authors.

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