1 Department of Obstetrics and Gynecology, College of Medicine, Hanyang University, Seoul, South Korea.
2 Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, Victoria, Australia.
3 Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China.
4 Translational Health Science and Technology Institute, National Capital Region Biotech Science Cluster, Faridabad, India.
5 Department of Obstetrics & Gynecology, Juntendo University Faculty of Medicine, Tokyo, Japan.
6 Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans Univeristy MokDong Hospital, Seoul, South Korea. Electronic address: kkyj@ewha.ac.kr.