[1] Chang Gung Univ, Dept Phys Med & Rehabil, Chang Gung Mem Hosp Linkou, Kwei Shan, Tao Yuan County, Taiwan
[2] Chang Gung Univ, Coll Med, Kwei Shan, Tao Yuan County, Taiwan
[3] Univ Hawaii Manoa, John A Burns Sch Med, Honolulu, HI 96822 USA
[4] Virginia Commonwealth Univ, Sch Med, Dept Phys Med & Rehabil, Richmond, VA USA
[5] Chang Gung Univ, Dept Phys Med & Rehabil, Chang Gung Mem Hosp Keelung, Kwei Shan, Tao Yuan County, Taiwan