1. Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine; Tottori University; Yonago Japan
2. Department of Neurology; Tottori Prefectural Central Hospital; Tottori Japan
3. Department of Neurology; Matsue Red Cross Hospital; Matsue Japan
4. Department of Neurology; Sanin Rosai Hospital; Yonago Japan