[1] Chang Gung Mem Hosp, Dept Neurol 2, Taipei, Taiwan
[2] Chang Gung Univ, Coll Med, Taipei, Taiwan
[3] Natl Taiwan Normal Univ, Dept Life Sci, Taipei, Taiwan
[4] Univ Toronto, Toronto Western Hosp, Univ Hlth Network, Div Neurol, Toronto, ON M5T 2S8, Canada