1. Reproductive Medical Center, the First Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
2. Henan Key Laboratory of Reproduction and Genetics, the First Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
3. Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, the First Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China