[1] Osaka Univ, Grad Sch Med, Dept Neurol, Osaka, Japan
[2] Toneyama Natl Hosp, Natl Hosp Org, Osaka, Japan
[3] Osaka Univ, Grad Sch Med, Dept Resp Med, Osaka, Japan
[4] Osaka Univ, Grad Sch Med, Dept Allergy, Osaka, Japan
[5] Osaka Univ, Grad Sch Med, Dept Rheumat Dis, Osaka, Japan