1. Shengjing Hospital of China Medical University Shenyang China
2. Anshan Cancer Hospital Anshan China
3. The Second Hospital of Chaoyang Liaoning China
4. Dalian Maternal and Child Care Hospital Dalian China
5. Shenyang Women's and Children's Hospital Shenyang China
6. Women's and Children's Hospital of Yingkou City Yingkou China
7. The Second People's Hospital and Gynecology and Obstetrics Hospital of Fuxin City Fuxin China
8. The First Affiliated Hospital of Jinzhou Medical University Jinzhou China
9. Dalian Municipal Women's and Children's Medical Center Dalian China
10. The First Affiliated Hospital of China Medical University Shenyang China