1. Division of Hematology, Department of Internal Medicine, Aichi Medical University School of Medicine
2. Subcommittee on the guideline for the use of platelet transfusion preparation of the Japan Society of Transfusion Medicine and Therapy
3. Department of Transfusion Medicine, Nagoya University Hospital
4. Blood Transfusion Center, Oita University Hospital
5. Division of Transfusion, Okayama University Hospital
6. Department of Transfusion and Cell Therapy, University of Miyazaki Hospital
7. Division of Hematology, Department of Medicine, Jichi Medical University
8. Department of Blood Transfusion Medicine, Nara Medical University
9. Department of Blood Transfusion, Osaka University Hospital