1. The University of Aizu,Graduate School of Computer Science and Engineering,Fukushima,Japan
2. Huazhong University of Science and Technology,Maternal and Child Hospital of Hubei Province Tongji Medical College,Department of Gynecology,Wuhan,China
3. Huazhong University of Science and Technology,Tongji Hospital, Tongji Medical College,Department of Obstetrics and Gynecology,Wuhan,China