1. Tooth Bioengineering Laboratory, Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.
2. Program of Cell and Developmental Biology, Department of Oral Histology and Development Biology, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.
3. Department of Biosystems Engineering, Agriculture and Life Sciences Research Institute, Kangwon National University, Chuncheon, Korea.
4. Department of Biomaterials Science and Engineering, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea.