1. Department of Internal Medicine, National Hospital Organization Awara Hospital, Japan
2. Department of Infection Control and Laboratory Medicine, Kyoto Prefectural University of Medicine, Japan
3. Department of Hematology, Red Cross Fukui Hospital, Japan
4. Department of Hematology and Oncology, Fukui Prefectural Hospital, Japan
5. Department of Hematology, National Hospital Organization Kanazawa Medical Center, Japan
6. Department of Oncology and Hematology, Fukui-ken Saiseikai Hospital, Japan
7. Department of Internal Medicine, National Hospital Organization Tsuruga Medical Center, Japan
8. Department of Hematology and Oncology, Faculty of Medical Sciences, University of Fukui, Japan
9. Department of Infection Control and Prevention, University of Fukui Hospital, Japan