Institution: | 1. Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea;2. Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea;3. Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland |