[1] Hirosaki Univ, Grad Sch Med, Dept Neurophysiol, Hirosaki, Aomori, Japan
[2] Hirosaki Univ, Grad Sch Med, Dept Neuropathol, Hirosaki, Aomori, Japan
[3] Hirosaki Univ, Grad Sch Med, Dept Neuropsychiat, Hirosaki, Aomori, Japan
[4] Mie Univ, Grad Sch Med, Dept Psychiat, Tsu, Mie 514, Japan
[5] Fukuoka Univ, Dept Pediat, Fukuoka 81401, Japan