Department of Hematology, Kasukabe Medical Center, Japan; Department of General Medicine, Juntendo University Faculty of Medicine, Japan; Correspondence to: Department of General Medicine, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan.
Atsuko Hojo
Department of Hematology, Kasukabe Medical Center, Japan
Umihiko Sawada
Department of Hematology, Kasukabe Medical Center, Japan
Yoshimasa Kura
Department of Hematology, Kasukabe Medical Center, Japan
