1. Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan;
2. Department of Rheumatology, Hyogo College of Medicine, Nishinomiya, Japan;
3. Department of Rheumatology, Kobe Kaisei Hospital, Kobe, Japan;
4. Department of Orthopedic Surgery, Kobe Kaisei Hospital, Kobe, Japan;
5. Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan