1. Graduate School of Health Sciences, Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
2. Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
3. Department of Radiation Technology, Ibaraki Prefectural Central Hospital
4. Department of Radiology, Tsuchiura Kyodo General Hospital
5. Department of Radiation Oncology, Ibaraki Prefectural Central Hospital
6. Department of Radiation Oncology, Fukushima Rosai Hospital