Institution: | 1. Clinical Research Assistant Professor, Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Republic of Korea;2. Graduate student, Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Republic of Korea;3. Clinical Associate Professor, Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Republic of Korea;4. Professor, Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Republic of Korea |