1. School of Information Convergence, Kwangwoon University, Seoul, Republic of Korea
2. Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, Illinois, USA
3. Texas A&M University-Corpus Christi, Corpus Christi, TX, USA
4. Department of Industrial and Management Engineering, Incheon National University, Incheon, Republic of Korea
5. Department of Rehabilitation Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea