1. Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Busan, Republic of Korea
2. Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
3. Department of Radiology, Pusan National University School of Medicine, Busan, Republic of Korea
4. Department of Pathology, Pusan National University School of Medicine, Busan, Republic of Korea
5. Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.