1. Department of Hematology, Kanagawa Cancer Center, Yokohama, Japan
2. Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
3. Clinical Research Support Center, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
4. Division of Hematology, Shonan Kamakura General Hospital, Kamakura, Japan
5. Department of Hematology and Clinical Immunology, Yokohama City University School of Medicine, Yokohama, Japan