Center for Prenatal Biomarker Research, CHA Advanced Research Institute, Seongnam, Korea. hmryu2012@naver.com.
Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Korea. hmryu2012@naver.com.