1. Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
2. Department of Prosthodontics, NHIS Ilsan Hospital, Goyang, Republic of Korea.
3. Department of Information and Statistics, Research Institute of Natural Science, Gyeongsang National University, Jinju, Republic of Korea.
4. Department of Bio & Medical Bigdata (BK21 Plus), Gyeongsang National University, Jinju, Republic of Korea.
5. Department of Dentistry, School of Medicine, Inha University, Incheon, Republic of Korea.