1. From the Department of Medicine (Cardiology), Teikyo University School of Medicine, Tokyo (K.E., T.I., S.T., M.O., N.Y., T.S.); the Central Research Laboratories, Ajinomoto Co, Inc, Yokohama (H.Y., R.Y.); and the Department of Medicine (Hematology), Keio University School of Medicine, Tokyo (Y.I.), Japan.