1 Department of Hematology, University of Tsukuba Hospital, Tsukuba, Japan; Department of Hematology, Tsukuba Memorial Hospital, Tsukuba, Japan.
2 Department of Hematology, University of Tsukuba Hospital, Tsukuba, Japan; Department of Transfusion Medicine, University of Tsukuba Hospital, Tsukuba, Japan.
3 School of Medicine and Health Sciences, University of Tsukuba, Tsukuba, Japan.
4 Department of Transfusion Medicine, University of Tsukuba Hospital, Tsukuba, Japan.
5 Laboratory of Stem Cell Therapy, University of Tsukuba, Tsukuba, Japan.
6 Department of Hematology, University of Tsukuba Hospital, Tsukuba, Japan; Department of Hematology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan.
7 Department of Hematology, University of Tsukuba Hospital, Tsukuba, Japan.
8 Department of Hematology, University of Tsukuba Hospital, Tsukuba, Japan; School of Medicine and Health Sciences, University of Tsukuba, Tsukuba, Japan.
9 Department of Hematology, University of Tsukuba Hospital, Tsukuba, Japan; Department of Transfusion Medicine, University of Tsukuba Hospital, Tsukuba, Japan; Department of Hematology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan. Electronic address: nishikih66@gmail.com.