1. Department of Interdisciplinary Program in Biomedical Science, Soonchunhyang University, Asan, Korea.
2. Department of Food and Nutrition, Yeonsung University, Anyang, Korea.
3. Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Bucheon, Korea.
4. Department of Biostatistics, Graduate School of Chung-Ang University, Seoul, Korea.