1. Department of Obstetrics and Gynecology, Ewha Womans University Global Top 5 Research Program, Ewha Womans University School of Medicine, Seoul, Korea.
2. Department of Pathology, Ewha Womans University Global Top 5 Research Program, Ewha Womans University School of Medicine, Seoul, Korea.
3. Department of Thoracic and Cardiovascular Surgery, Ewha Womans University Global Top 5 Research Program, Ewha Womans University School of Medicine, Seoul, Korea.