1. MH Jan, PT, MS, is Associate Professor, School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan
2. HM Chai, PT, PhD, is Lecturer, School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan
3. YF Lin, MD, is Orthopaedic Surgeon, Taipei City Hospital, and a doctoral student, Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan
4. JCH Lin, PT, MS, is a doctoral student, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, Calif
5. LY Tsai, PT, MS, and YC Ou, PT, MS, are Senior Physical Therapists, Department of Physical Therapy, Mackay Memorial Hospital, Taipei, Taiwan
6. DH Lin, MD, is Orthopaedic Surgeon, Department of Orthopaedics, En Chu Kong Hospital, Taiwan