Student, Seoul National University, 1973—1975. Doctor of Medicine, Seoul National University, 1979. Master of Science, Seoul National University, 1987.
Doctor of Philosophy, Seoul National University, 1990.
Instructor department obstetrics-gynecology Seoul National University School Medicine, 1988—1990, assistant professor department obstetrics-gynecology, 1990—1995, associate professor department obstetrics-gynecology, 1995—2000, professor department obstetrics-gynecology, since 2000.
Member of Korean Academy Medical Sciences, Korean Society Fetal Medicine (director general affairs 1994-1995, director committee publication 2002, director academy affairs 2004-2006, vice president since 2006), Society Maternal-Fetal Medicine (affiliate member, Research Excellence award 1996), Korean Society Ultrasound in Medicine, Korean Medical Association, Korean Society Perinatology, Korean Society Obstetrics and Gynecology (First Paper Prize award 1995).
Married Byung-Hye Lee. Children: Young-Seok, Young-Jun.