1. Department of Physical Medicine and Rehabilitation Cheng Hsin General Hospital Taipei Taiwan, Republic of China
2. Graduate Institute of Gerontology and Health Care Management Chang Gung University of Science and Technology Taoyuan Taiwan, Republic of China
3. Institute of Biomedical Sciences, Academia Sinica Taipei Taiwan, Republic of China
4. Department of Neurosurgery Cheng Hsin General Hospital Taipei Taiwan, Republic of China
5. National Taipei University of Nursing and Health Sciences Taipei Taiwan, Republic of China
6. Department of Medical Education Chang Gung Memorial Hospital at Linkou Taoyuan Taiwan, Republic of China
7. Department of Physiology and Biophysics National Defense Medical Center Taipei Taiwan, Republic of China