Affiliation: | 1. Department of Orthopedics, National Cheng Kung University Hospital, Tainan, Taiwan 2. Institute of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan 3. Department of Anesthesiology, George Washington University, Washington, DC, USA 4. Department of Occupational Therapy, National Cheng Kung University, Tainan, Taiwan 5. Department of Orthopaedic Surgery, National Cheng Kung University Medical Center, 138 Sheng Li Road, Tainan, 704, Taiwan
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