1. Department of Gynecology and Obstetrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
2. Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
3. Department of Obstetrics and Gynecology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
4. Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan