1. Department of Gynecology, Huizhou No. 2 Women’s and Children’s Healthcare Hospital, Huizhou, Guangdong 516001, China
2. Huizhou College of Life Sciences, Huizhou, Guangdong 516001, China
3. Department of Gynecology, Shandong Provincial Tumor Hospital, Jinan, Shandong 250117, China
4. Department of Gynecology, Shenyang Maternal and Child Hospital, Shenyang, Liaoning 110000, China