1 Department of Clinical Neuroscience, Unit of Clinical Medicine, Nagasaki University Graduate School of Biomedical Sciences, Department of Neurology and Strokology, Nagasaki University Hospital, Japan. Electronic address: akrtjn@nagasaki-u.ac.jp.
2 Department of Clinical Neuroscience, Unit of Clinical Medicine, Nagasaki University Graduate School of Biomedical Sciences, Department of Neurology and Strokology, Nagasaki University Hospital, Japan.