Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KAI Michiaki,Current Understanding of Radiation Risk and Radiological Protection System,TRENDS IN THE SCIENCES,13423363,Japan Science Support Foundation,2013,18,5,5_83-5_87,https://cir.nii.ac.jp/crid/1390001205030147584,https://doi.org/10.5363/tits.18.5_83