1. National Cancer Control Institute, National Cancer Center, Goyang, Korea.
2. Department of Medicine, Hanyang University College of Medicine, Seoul, Korea.
3. Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.
4. Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Radiology, Soonchunhyang University Hospital Bucheon, Soonchunhyang University College of Medicine, Bucheon, Korea.