1. The Second Department of Internal Medicine University of Occupational and Environmental Health Kitakyushu Fukuoka Japan
2. The Department of Environmental Epidemiology Institute of Industrial Ecological Sciences University of Occupational and Environmental Health Kitakyushu Japan
3. Tagawa Shiritsu Hospital Tagawa Fukuoka Japan
4. Department of Heart Rhythm Management University of Occupational and Environmental Health Kitakyushu Fukuoka Japan