1. Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
2. Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
3. Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
4. Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan