1. Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1, Minami-kogushi, Ube, Yamaguchi 755-8505, Japan
2. Department of Cardiovascular Research, Research Institute of Environmental Medicine, Nagoya University, Japan
3. Department of Cardiology, Gifu University Graduate School of Medicine, Japan
4. Nagoya University, Japan
5. Center for Gene Research, Yamaguchi University, Japan