1. Department of Radiology Hospital of the University of Occupational and Environmental Health, Japan Kitakyushu Fukuoka Japan
2. Department of Radiation Regulatory Research Group National Institute of Radiological Sciences Quantum Life and Medical Science Directorate National Institute for Quantum and Radiological Science and Technology Chiba Japan
3. Department of Occupational and Community Health Nursing School of Health Sciences University of Occupational and Environmental Health, Japan Kitakyushu Fukuoka Japan
4. Department of Radiology Shinkomonji Hospital Kitakyushu Fukuoka Japan