[1] Tottori Univ, Fac Med, Dept Brain & Neurosci, Div Child Neurol, 36-1 Nishi Cho, Yonago 6838504, Japan
[2] Okayama Univ Hosp, Dept Clin Genet, Okayama, Japan
[3] Tottori Univ, Fac Med, Sch Med, Dept Surg, Yonago, Japan
[4] Yokohama City Univ Med, Clin Genet Dept, Yokohama, Japan