1. Department of Healthcare Engineering, Jeonbuk National University, Jeonju, Korea
2. Division of Biomedical Engineering, Jeonbuk National University, Jeonju, Korea
3. Research Center of Healthcare and Welfare Instrument for the Aged, Jeonbuk National University, Jeonju, Korea
4. Department of Energy Storage/Conversion Engineering of Graduate School (BK21 FOUR), Jeonbuk National University, Jeonju, Korea
5. Cybermedic, Co., Ltd., Gwangju, Korea
6. Bukeong Hightech, Co., Gunsan, Korea
7. Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju, Korea