1. Department of Cell Modulation, Institute of Molecular Embryology and Genetics, Kumamoto University, 2‐2‐1 Honjo, Kumamoto, Japan
2. RIKEN Program for Drug Discovery and Medical Technology Platforms, 2‐1 Hirosawa, Wako, Saitama, Japan
3. Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4‐4‐1 Ogawahigashi, Kodaira, Tokyo, Japan
4. DNAVEC Corporation, 6 Ookubo, Tsukuba, Ibaragi, Japan
5. Department of Orthopaedic Surgery, Kyushu University School of Medicine, 3‐1‐1 Maedashi, Higashi‐ku, Fukuoka, Japan
6. Department of Neurology, Neuro‐Muscular Center, National Omuta Hospital, 1044‐1 Tachibana, Omuta, Fukuoka, Japan
7. Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo, Japan