[1] Osaka Univ, Dept Neurol, Suita, Osaka, Japan
[2] Nagoya Univ, Dept Neurol, Nagoya, Aichi, Japan
[3] Aichi Med Univ, Inst Med Sci Aging, Ngakute, Japan
[4] Toneyama Natl Hosp, Dept Neurolog, Toyonaka, Osaka, Japan
[5] Tottori Univ, Div Neuropathol, Dept Brain & Neurosci, Yonago, Tottori, Japan