1. Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea.
2. Department of Surgery, Inha University Hospital, Incheon, Korea.
3. Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.
4. Department of Surgery, SMGSNU Boramae Medical Center, Seoul, Korea.
5. Department of Biomedical Engineering, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
6. Department of Biomedical Engineering, Chungnam National University Hospital, Chungnam National University College of Medicine, Daejeon, Korea.