1. Department of Neurology; University of Occupational and Environmental Health School of Medicine; Kitakyushu Fukuoka Japan
2. Department of Radiology; University of Occupational and Environmental Health; School of Medicine; Kitakyushu Japan
3. Department of Pathology; University of Occupational and Environmental Health; School of Medicine; Kitakyushu Japan
4. Department of Neurology; Nagoya University Graduate School of Medicine; Nagoya Aichi Japan