1. School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, 3F, No. 17 Xuzhou Road, Taipei 100, Taiwan
2. Department of Surgery, Cheng Ching General Hospital, 118 Sec. 3 Chung Kang Road, Taichung 407, Taiwan
3. Division of Physical Therapy, Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, No. 7 Chung-Shan S. Road, Taipei 100, Taiwan