1. Department of Hematology, Fukuchiyama City Hospital, Fukuchiyama, Japan
2. Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
3. Department of Biostatistics, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
4. Department of Hematology, Japan Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
5. Department of Hematology, Japan Red Cross Kyoto Daini Hospital, Kyoto, Japan
6. Department of Hematology, Aiseikai Yamashina Hospital, Kyoto, Japan
7. Department of Hematology, JCHO Kyoto Kuramaguchi Medical Center, Kyoto, Japan
8. Department of Hematology, Matsushita Memorial Hospital, Moriguchi, Japan
9. Department of Internal Medicine, Otsu Municipal Hospital, Otsu, Japan