From the Division of Hematology/Oncology, Cedars-Sinai Research Institute, UCLA School of Medicine, Los Angeles, CA; the Deparment of Laboratoy Medicine and the Department of Hematology, Nagasaki University School of Medicine, Nagasaki, Japan; the Department of Medicine, Kochi Medical School, Kochi, Japan; and the Department of Pathology, Center for the Health Science, UCLA School of Medicine, Los Angeles, CA.(1999-01-15時点)