1. Department of Charged Particle Therapy Research Institute of Quantum Medical Science, National Institutes of Quantum Science and Technology (QST) Chiba Japan
2. Department of Management Western Governors University Millcreek Utah USA
3. Department of Environmental & Radiological Health Sciences Colorado State University Fort Collins CO USA
4. Department of Radiation Measurement and Dose Assessment, Institute of Radiological Sciences National Institutes of Quantum Science and Technology (QST) Chiba Japan