[1] Chang Gung Univ, Kaohsiung Chang Gung Mem Hosp, Dept Neurol, Coll Med, Kaohsiung 83301, Taiwan
[2] Osaka Univ, Dept Psychiat, Grad Sch Med, Suita, Osaka 5650871, Japan
[3] Chang Gung Univ, Kaohsiung Chang Gung Mem Hosp, Dept Nucl Med, Coll Med, Kaohsiung 83301, Taiwan
[4] Chang Gung Univ, Kaohsiung Chang Gung Mem Hosp, Dept Radiol, Coll Med, Kaohsiung 83301, Taiwan