1. Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University, Gakkocho-dori, Chuo-ku, Niigata, Japan
2. Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Sakuragaoka, Kagoshima, Japan
3. Department of Regenerative Medicine, Graduate School of Medicine, University of the Ryukyus, Nishiharatyoaza, Uehara, Okinawa, Japan
4. Section of Pediatric Dentistry Department of Oral Growth and Development Fukuoka Dental College, Sawara-ku, Tamura Fukuoka-shi, Fukuoka, Japan
5. Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University, Sakuragaoka, Kagoshima, Japan