First Department of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan. Department of Pharmacy, Gifu University Hospital, Gifu, Japan. Division of Hematology, Hamamatsu University School of Medicine, Hamamatsu, Japan. Department of Hematology, Gifu Municipal Hospital, Gifu, Japan. Department of Hematology, Japanese Red Cross Gifu Hospital, Gifu, Japan. Laboratory of Pharmaceutical Engineering, Gifu Pharmaceutical University, Gifu, Japan.