1. Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
2. Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
3. Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
4. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
5. Division of Hematology/Oncology, Department of Internal Medicine, Korea Cancer Center Hospital, Seoul, Korea.
6. Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Surgery & Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.