1. Department of Stem Cell Biology and Regenerative Medicine; National Center for Geriatrics and Gerontology; Research Institute; Obu Japan
2. Department of Oral Maxillofacial Surgery; School of Dentistry; Aichi Gakuin University; Nagoya Japan
3. Department of Pediatric Dentistry; School of Dentistry; Aichi Gakuin University; Nagoya Japan