1. Department of Biomedical Engineering, Gachon University, Incheon, Korea.
2. Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center, Goyang, Korea.
3. Department of Orthopedic Surgery, National Medical Center, Seoul, Korea.
4. Department of Orthopedic Surgery, Inje University Sanggye Paik Hospital, Seoul, Korea.