[1] Niigata Univ, Brain Res nst, Niigata, Japan
[2] Niigata Univ, Brain Res nst, Mol Genet, Niigata, Japan
[3] Niigata Univ, Brain Res nst, Neurol, Niigata, Japan
[4] Tokushima Univ, Grad Sch, Inst Hlth Biosci, Clin Neurosci, Tokushima, Japan
[5] Kyoto Prefecture Univ Med, Neurol, Kyoto, Japan
[6] Mayo Clin Florida, Neurol, Jacksonville, FL USA
[7] Mayo Clin Jacksonville, Neurol, 4500 San Pablo Rd, Jacksonville, FL 32224 USA
[8] Shinshu Univ, Sch Med, Brain Dis Res, Matsumoto, Nagano, Japan