1 From the Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan County, Taiwan (CPCC, P-CH); University of Hawaii at Manoa, John A. Burns School of Medicine, Honolulu, Hawaii (HLL); Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia (HLL); and Department of Orthopedic Surgery, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan County, Taiwan (C-WY).