1. Department of Biomedical Software Engineering, The Catholic University of Korea, Bucheon, Gyeonggi, South Korea
2. Department of Computer Science, Chungbuk National University, Cheongju, Chungbuk, South Korea
3. Engineering Division, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
4. College of Information Science, Hallym University, Chuncheon, Gangwon, South Korea
5. Department of Physical and Rehabilitation Medicine, Sungkyunkwan University School of Medicine, Suwon, Gyeonggi, South Korea
6. Department of Computer Science, Chungbuk National University, Cheongju, Chungcheongbuk, South Korea