1 Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Beihu Branch, Taipei, Taiwan.
2 The Hong Kong Institute of Musculoskeletal Medicine, Kowloon, Hong Kong.
3 Department of Family Medicine, The Chinese University of Hong Kong, New Territories, Hong Kong.
4 Department of Family Medicine, The University of Hong Kong, 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.