1. China Key Laboratory for Early Diagnosis and Biotherapy of Malignant Tumors in Children and Women, Dalian Women and Children’s Medical Group, Dalian 116012, China
2. Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
3. The Second Affiliated Hospital of Harbin Medical University, Harbin 151801, China