1. Departments of Dental Regenerative Medicine, Center of Advanced Medicine for Dental and Oral Diseases, National Center for Geriatrics and Gerontology, Research Institute, Obu, Japan
2. Departments of Endodontology, School of Dentistry, Aichi-gakuin University, Nagoya, Japan
3. Department of Developmental Anatomy and Regenerative Medicine, National Defense Medical College, Tokorozawa, Japan
4. Departments of Pediatric Dentistry, School of Dentistry, Aichi-gakuin University, Nagoya, Japan
5. Drug Safety Research Laboratories, Shin Nippon Biomedical Laboratories Ltd., Kagoshima, Japan
6. Departments of Oral Disease Research, Center of Advanced Medicine for Dental and Oral Diseases, National Center for Geriatrics and Gerontology, Research Institute, Obu, Japan