1. Department of Occupational Therapy; Sapporo Medical University School of Health Sciences; S1W17 Chuo-ku Sapporo 060-8556 Japan
2. Department of Neurology; Keio University School of Medicine; Tokyo Japan
3. Department of Neurology; Sapporo Medical University School of Medicine; Sapporo Japan
4. Department of Neurology; Hanamaki General Hospital; Hanamaki Japan
5. Department of Neurology; Graduate School of Medical Sciences, Kyushu University; Fukuoka Japan
6. Department of Neurology; Tokyo Medical University; Tokyo Japan
7. Department of Neurology; Toho University Medical Center Oh-hashi Hospital; Tokyo Japan
8. Department of Neurology; National Hospital Organization, Sendai Medical Center; Sendai Japan
9. Department of Neurology; Nagasaki Kawatana Medical Center; Kawatana Japan
10. Department of Neurology; Tohoku University Graduate School of Medicine; Sendai Japan