1. Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Jeonbuk, Korea
2. Department of Physical Medicine and Rehabilitation, Chonbuk National University Medical School, Jeonju, Jeonbuk, Korea
3. Division of Biomedical Engineering, Chonbuk National University, Jeonju, Jeonbuk, Korea