1. Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan.
2. Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
3. Japan Clinical Metabolomics Institute, Ishikawa, Japan.
4. Neurohealth Innovation Division, Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan.
5. Department of Pediatrics, Hokkaido Medical Center, Hokkaido, Japan.
6. Division of Clinical Laboratory, Sendai City Hospital, Sendai, Japan.
7. Department of Ophthalmology, Juntendo University Urayasu Hospital, Tokyo, Japan.