1. Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan,
2. Department of Nutritional Education, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan,
3. Department of Neurology, National Hospital Organisation Takamatsu Medical Centre, Takamatsu, Japan,
4. Department of Neurology, National Hospital Organisation Iou Hospital, Kanazawa, Japan,
5. Laboratory of Nursing Research for Intractable Disease, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan,
6. Department of Neurology, National Hospital Organisation Hakone Hospital, Odawara, Japan, and
7. Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan