1. Department of Hematology and Oncology, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan
2. Department of Hematology and Oncology, Matsunami General Hospital, Gifu 501-6062, Japan
3. Department of Internal Medicine, Matsunami General Hospital, Gifu 501-6062, Japan
4. Department of Healthcare Economics and Quality Management, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
5. Department of Cancer Care Promotion Center, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan
6. Department of Hematology, Fukui Red Cross Hospital, Fukui 918-8501, Japan
7. Department of Internal Medicine, Osu Hospital, Nagoya 460-0017, Japan