1. Lili Zhuang:
Reproductive Medicine Centre, Yuhuangding Hospital of Yantai, Affiliated Hospital of Qingdao University,Yantai, Shandong,China
2. Xiaoyan Liu:
Reproductive Medicine Centre, Yuhuangding Hospital of Yantai, Affiliated Hospital of Qingdao University,Yantai, Shandong,China
3. Jianxiang Cong:
Reproductive Medicine Centre, Yuhuangding Hospital of Yantai, Affiliated Hospital of Qingdao University,Yantai, Shandong,China
4. Ning Zhang:
Reproductive Medicine Centre, Yuhuangding Hospital of Yantai, Affiliated Hospital of Qingdao University,Yantai, Shandong,China
5. Qinglan Qu:
Reproductive Medicine Centre, Yuhuangding Hospital of Yantai, Affiliated Hospital of Qingdao University,Yantai, Shandong,China
6. Cuifang Hao:
Reproductive Medicine Centre, Yuhuangding Hospital of Yantai, Affiliated Hospital of Qingdao University,Yantai, Shandong,China