1. Department of Endocrinology and Metabolism, Ajou University School of Medicine, Korea.
2. Department of Medical Genetics, Ajou University School of Medicine, Korea.
3. Department of Obstetrics and Gynecology, Ajou University School of Medicine, Korea.
4. Department of Pathology, Ajou University School of Medicine, Korea.
5. Department of Obstetrics and Gynecology, Eulji University School of Medicine, Korea.