1 Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China.
2 Department of Pathology and Laboratory Medicine, University of Tennessee Health Science Center, Memphis, TN, USA.
3 Department of Clinical Laboratory, The Third Affiliated Hospital of Zhengzhou University, No. 7 Front Kangfu Street, Zhengzhou, 450052, Henan, People's Republic of China.
4 Department of Bioscience, University of Tennessee Health Science Center, Memphis, TN, USA.
5 Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, Henan, People's Republic of China.
6 Department of Reproductive Medicine Center, The People's Hospital of Henan Province, Zhengzhou, Henan, People's Republic of China.
7 Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China. zhangzhanxm@163.com.
8 Department of Clinical Laboratory, The Third Affiliated Hospital of Zhengzhou University, No. 7 Front Kangfu Street, Zhengzhou, 450052, Henan, People's Republic of China. zhangzhanxm@163.com.