1. Department of Hematology and Oncology; Nagoya Daini Red Cross Hospital; Nagoya; Japan
2. Department of Hematology; Atomic Bomb Disease Institute; Nagasaki University Graduate School of Biomedical Science; Nagasaki; Japan
3. Clinical Research Center; National Hospital Organization Nagoya Medical Center; Nagoya; Japan
4. Department of Hematology and Hematopoietic Stem Cell Transplantation; National Cancer Center Hospital; Tokyo; Japan
5. National Hospital Organization Nagoya Medical Center; Nagoya; Japan