About the Authors

Huajun Zheng

Contributed equally to this work with: Huajun Zheng, Xiaoyu Zhou

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

Xiaoyu Zhou

Contributed equally to this work with: Huajun Zheng, Xiaoyu Zhou

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

De-kun Li

Affiliation Division of Research, Kaiser Foundation Research Institute, Kaiser Permanente Northern California, Oakland, and Department of Health Research and Policy, School of Medicine, Stanford University, Stanford, California, United States of America

Fen Yang

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

Hongjie Pan

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

Tianqi Li

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

Maohua Miao

runshengli2007@163.com (RSL); miaomaohua@163.com (MHM)

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

Runsheng Li

runshengli2007@163.com (RSL); miaomaohua@163.com (MHM)

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

Wei Yuan

Affiliations Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China, WHO Collaborating Center for Research in Human Reproduction, Shanghai, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: RSL WY. Data curation: HJZ XYZ MHM. Formal analysis: HJZ XYZ DKL FY HJP. Funding acquisition: RSL MHM. Investigation: HJZ XYZ HJP TQL. Methodology: HJZ XYZ DKL MHM RSL. Project administration: RSL WY. Resources: MHM RSL WY. Software: HJZ XYZ TQL. Supervision: MHM RSL WY. Validation: HJZ XYZ DKL MHM RSL WY. Visualization: HJZ XYZ RSL. Writing – original draft: HJZ XYZ RSL. Writing – review & editing: HJZ DKL MHM RSL WY.