1. From the Harvard Institutes of Medicine, Harvard Medical School, Boston, MA; the Department of Internal Medicine, Kumamoto University, Japan; the Department of Viral Oncology, Institute for Virus Research, Kyoto University, Kyoto, Japan; the Department of Medicine and Medical Biophysics, University of Toronto, Canada; the Department of Medicine III, Grosshadern, Clinical Cooperative Group Acute Myeloid Leukemia of the National Research Center for Environment and Health (GSF), Munich, Germany.