1. Department of Hematology and Oncology and
2. Department of Pathology and Molecular Diagnostics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan;
3. Department of Tumor Immunology, School of Medicine, Aichi Medical University, Aichi, Japan;
4. Department of Hematology, Osaka Red Cross Hospital, Osaka, Japan;
5. Department of Immunology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan;
6. Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan;
7. Bayer AG Pharmaceuticals Division, Berlin, Germany; and
8. Bayer Yakuhin, Ltd, Osaka, Japan