1. From the Health Management and Promotion Center, Hiroshima Atomic Bomb Casualty Council, Japan (N.S.)
2. Department of Cardiovascular Medicine, Hiroshima City Asa Hospital, Japan (M.N.)
3. Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan (H.M., S.H., K.K.)
4. Technology Development Headquarter, Clinical Development Department, Omron Healthcare Co, Ltd, Kyoto, Japan (M.K.).