About the Authors

Jung-Chien Cheng

Affiliation Department of Obstetrics and Gynaecology, Child & Family Research Institute, University of British Columbia, Vancouver, British Columbia, V5Z 4H4, Canada

Hsun-Ming Chang

Affiliation Department of Obstetrics and Gynaecology, Child & Family Research Institute, University of British Columbia, Vancouver, British Columbia, V5Z 4H4, Canada

Lanlan Fang

Affiliations Department of Obstetrics and Gynaecology, Child & Family Research Institute, University of British Columbia, Vancouver, British Columbia, V5Z 4H4, Canada, Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China

Ying-Pu Sun

Affiliation Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China

Peter C. K. Leung

peter.leung@ubc.ca

Affiliation Department of Obstetrics and Gynaecology, Child & Family Research Institute, University of British Columbia, Vancouver, British Columbia, V5Z 4H4, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JCC PCKL. Performed the experiments: JCC HMC LF. Analyzed the data: JCC HMC LF YPS. Wrote the paper: JCC YPS PCKL.