1. Department of Intractable Diseases, National Center for Global Health and Medicine, Tokyo, Japan
2. Department of Laboratory Animal Medicine, National Center for Global Health and Medicine, Tokyo, Japan
3. Department of Pediatrics, Juntendo University School of Medicine, Tokyo, Japan
4. Division of Integrated Sciences for Life, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
5. Deafness Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan