Affiliation: | (1) Division of Hematology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan;(2) Third Department of Internal Medicine, Yamaguchi University School of Medicine, Yamaguchi, Japan;(3) Department of General Internal Medicine, Kitasato University Kitasato Institute Hospital, Tokyo, Japan |