1. Department of Oncology/Hematology, Kyungpook National University Hospital, Daegu, Korea.
2. Department of Oncology/Hematology, Keimyung University College of Medicine, Daegu, Korea.
3. Department of Oncology/Hematology, Catholic University of Daegu, College of Medicine, Daegu, Korea.
4. Department of Oncology/Hematology, Dongguk University College of Medicine, Gyeongju, Korea.
5. Department of Oncology/Hematology, Yeungnam University College of Medicine, Daegu, Korea.
6. Department of General Surgery, Kyungpook National University Hospital, Daegu, Korea.