1. Department of Surgery, College of Medicine, Catholic University of Daegu, Daegu, Korea.
2. Department of Anatomy, College of Medicine, Catholic University of Daegu, Daegu, Korea.
3. Department of Radiology and Biomedical Engineering, College of Medicine, Catholic University of Daegu, Daegu, Korea.
4. Department of Thoracic and Cardiovascular Surgery, College of Medicine, Seoul National University, Seoul, Korea.
5. Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, Korea.