1. Department of Hematology, National Cancer Center Hospital, Tokyo, Japan,
2. Innovative Cancer Center, Shimane University Hospital, Izumo, Japan,
3. Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata, Japan,
4. AstraZeneca K.K., Osaka, Japan,
5. Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan