1. Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Korea.
2. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
3. Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.
4. Department of Surgery, College of Medicine, Ewha Womans University, Seoul, Korea.
5. Department of Surgery, Dongguk University Ilsan Hospital, Goyang, Korea.
6. Department of Radiology, Seoul National University Hospital, Seoul, Korea.
7. Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.