1. Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
2. Department of Physical Medicine and Rehabilitation and Community and Geriatric Research Center, National Taiwan University Hospital, Taipei, Taiwan
3. Department of Physical Medicine and Rehabilitation, College of Medicine, National Taiwan University Hospital, National Taiwan University, Taipei, Taiwan
4. Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey
5. Center for Regional Anesthesia and Pain Medicine, Wang-Fang Hospital, Taipei Medical University, Taipei, Taiwan