1. Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Beihu Branch, Taipei, Taiwan
2. The Hong Kong Institute of Musculoskeletal Medicine, Hong Kong
3. Department of Family Medicine, the Chinese University of Hong Kong, Hong Kong
4. Department of Family Medicine, the University of Hong Kong, Hong Kong
5. Center for Regional Anesthesia and Pain Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
6. Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan
7. Integrated Pain Management Center, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan