1. Department of Neurology, Graduate School of Medical Science Kyoto Prefectural University of Medicine Kyoto Japan
2. Kyoto MS Center Kyoto Min‐Iren Chuo Hospital Kyoto Japan
3. Department of Animal Model Development Brain Research Institute, Niigata University Niigata Japan
4. Department of Multiple Sclerosis Therapeutics Fukushima Medical University, School of Medicine Fukushima Japan
5. International Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Tsukuba Japan
6. Ibaraki Prefectural Medical Center of Psychiatry Kasama Japan