1. Department of Pediatrics, Department of Genome Medicine and Science, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
2. Department of Pediatrics, Seoul National University Bundang Hospital, Seongnam, Korea
3. Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, Korea
4. The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
5. Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea