1. Department of Medical & Biological Engineering, Graduate School, Kyungpook National University, Daegu 41944, South Korea
2. Department of Biomedical Engineering, School of Medicine, Kyungpook National University, Daegu, South Korea
3. Department of Biomedical Engineering Center, Kyungpook National University Chilgok Hospital, Daegu 41944, South Korea
4. Gyeongbuk Institute of IT Convergence Industry Technology, Gyeongsan-si 38463, Korea