1. Department of Pathology, Kurume University, School of Medicine, Kurume, Japan
2. Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
3. Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
4. Department of Hematology, Atomic Bomb Disease and Hibakusha Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
5. Department of Medicine and Biosystemic Science, Kyushu University Faculty of Medicine, Fukuoka, Japan
6. Department of Hematology, Hara Sanshin Hospital, Fukuoka, Japan
7. Department of Hematology, Kushiro Rosai Hospital, Kushiro, Japan
8. Department of Hematology, Hamanomachi Hospital, Fukuoka, Japan
9. Department of Hematology, Kurume University, School of Medicine, Kurume, Japan