1National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
2The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-city, Chiba 277-8581, Japan
3Fukushima Medical University, 1-Hikarigaoka, Fukushima-city, Fukushima 960-1295, Japan.
The authors declare no conflicts of interest.
For correspondence contact: Osamu Kurihara, Department of Radiation Measurement and Dose Assessment, Center for Advanced Radiation Emergency Medicine, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, or email at [email protected].
(Manuscript accepted 23 July 2021)
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