1. Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei City 112201, Taiwan
2. School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei City 11221, Taiwan
3. Department of Physical Medicine and Rehabilitation, West Garden Hospital, Taipei City 108035, Taiwan
4. Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei City 10845, Taiwan