1. Division of Biomedical Informatics, Center for Genome Science, National Institute of Health, KCDC, Cheongwon, Korea.
2. Department of Radiology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
3. Department of Obstetrics and Gynecology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.