Increased Infertility With Age in Men and Women

@article{Dunson2004IncreasedIW,
  title={Increased Infertility With Age in Men and Women},
  author={David B. Dunson and Donna D. Baird and Bernardo Colombo},
  journal={Obstetrics \& Gynecology},
  year={2004},
  volume={103},
  pages={51-56}
}
OBJECTIVE: To estimate the effects of aging on the percentage of outwardly healthy couples who are sterile (completely unable to conceive without assisted reproduction) or infertile (unable to conceive within a year of unprotected intercourse). METHODS: A prospective fecundability study was conducted in a sample of 782 couples recruited from 7 European centers for natural family planning. Women aged 18–40 years were eligible. Daily intercourse records were used to adjust for timing and… 
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