1. Department of Pediatrics, Kumamoto University School of Medicine, Kumamoto, Japan.
2. The 21st Century COE Program “Cell Fate Regulation Research and Education Unit,” Kumamoto University, Kumamoto, Japan.
3. Japan Society for the Promotion of Science (JSPS), Research Fellow.
4. Department of Oral and Maxilofacial Surgery, Kumamoto University School of Medicine, Kumamoto, Japan.