1. Department of Healthcare Engineering, College of Engineering, Chonbuk National University 567, Baekje-daero, Deokjin-ku, Jeonju-si, Jeollabuk-do, 54896, REPUBLIC OF KOREA
2. Department of Rehabilitation Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon, 301-721, REPUBLIC OF KOREA
3. School of Electronics and Computer Engineering, College of Engineering, Chonnam National University 77 Yongbong-ro, Buk-gu, Gwangju, 61186, REPUBLIC OF KOREA
4. Division of Biomedical Engineering, College of Engineering Chonbuk National University 567, Baekje-daero, Deokjin-ku, Jeonju-si, Jeollabuk-do, 54896, REPUBLIC OF KOREA
5. Research Center of Healthcare & Welfare Instrument for the Aged, Chonbuk National University 567, Baekje-daero, Deokjin-ku, Jeonju-si, Jeollabuk-do, 54896, REPUBLIC OF KOREA