Affiliation: | 1.Department of Prosthodontics, Ewha Womans University, Seoul, Republic of Korea.;2.Department of Oral and Maxillofacial Surgery, Asan Medical Center, Seoul, Republic of Korea.;3.Department of Prosthodontics & Dental Research Institute, Seoul National University, Seoul, Republic of Korea.;4.Department of Prosthodontics, S-PLANT Dental Hospital, Seoul, Republic of Korea.;5.Department of Medical Statistics, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea. |