About the Authors

Nicole A. Huijgen

Affiliation Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands

Joop S. E. Laven

Affiliation Department of Obstetrics and Gynaecology, Division of Reproductive Medicine, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands

Chantal T. Labee

Affiliation Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands

Yvonne V. Louwers

Affiliation Department of Obstetrics and Gynaecology, Division of Reproductive Medicine, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands

Sten P. Willemsen

Affiliations Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands, Department of Biostatistics, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands

Régine P. M. Steegers-Theunissen

r.steegers@erasmusmc.nl

Affiliation Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RPMS-T JSEL. Performed the experiments: NAH YL CL. Analyzed the data: NAH YL CL SW. Wrote the paper: NAH CL YL SW JSEL RPMS-T. Clinically responsible for the patients visiting the outpatient fertility clinic: JSEL. Statistical support: SW. Data collection: NAH CL YL. Approved the final version: NAH CL YL SW JSEL RPMS-T.