1. Department of Oncology/Hematology, Kyungpook National University Medical Center, Kyungpook National University Cancer Research Institute, Kyungpook National University School of Medicine, Daegu, Korea.
2. Department of Pathology, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea.
3. Department of Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea.