1. Laboratory for the Study of Regenerative Dental Medicine Department of Oral Histology-Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, 1 Gwanakro, Gwanak-Gu, Seoul 08826, Republic of Korea
2. Regenerative Dental Medicine R and D Center, Hysensbio Co., Ltd., Seoul, Republic of Korea
3. Department of Oral Hygiene, Namseoul University, Cheonan, Republic of Korea