1. Department of Rehabilitation Medicine, Konkuk University School of Medicine and Konkuk University Medical Center, Seoul, Korea.
2. Department of Rehabilitation Medicine, Gyeongin Rehabilitation Center Hospital, Incheon, Korea.
3. Department of Radiology, Konkuk University School of Medicine and Konkuk University Medical Center, Seoul, Korea.
4. Department of Medical Science, Konkuk University School of Medicine, Seoul, Korea.