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History
- December 28, 2018.
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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
Author Information
- 1Reproductive Medical Center, the 2nd Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
- 2Department of Gynecology and Obstetrics, Traditional Chinese medical hospital of Zhengzhou, Zhengzhou 450014, China
- ↵*Corresponding author: Li Tan, Reproductive Medical Center, the 2nd Affiliated Hospital of Zhengzhou University, No. 2 of Jingba Road, Jinshui District, Zhengzhou 450014, China, Tel: +86 371 63974083, Fax: +86 371 63934118, E-mail: tanl02531{at}21cn.com