1Department of Neurology, Hiroshima City Asa Citizens Hospital, 2–1-1, Kabeminami, Asakita-ku, Hiroshima, 731–0293 Japan
2Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1–2-3 Kasumi, Minami-ku, Hiroshima, 734–8553 Japan
3Department of Neurology, National Hospital Organization Kure Medical Center and Chugoku Caner Center, 3–1 Aoyama-cho, Kure, Hiroshima, 737–0023 Japan
4Department of Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, 1–2-3 Kasumi, Minami-ku, Hiroshima, 734–8553 Japan
5Department of Supportive and Promotive Medicine of the Municipal Hospital, Faculty of Medicine, Kagawa University, 1750–1 Ikenobe Kagawa, Miki-cho, Kita-gun 761–0793 Japan
6Aichi Medical University, Nagakute, Aichi Japan
7Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Aichi 480–1195 Japan
8Department of Neurology, National Hospital Organization Suzuka National Hospital, 3–2-1, Kasado, Suzuka, Mie 513–8501 Japan
© The Author(s) 2021
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