A prospective study to evaluate the efficacy of modified swim-up preparation for male sex selection.

@article{Check1993APS,
  title={A prospective study to evaluate the efficacy of modified swim-up preparation for male sex selection.},
  author={Jerome H. Check and Diane Katsoff},
  journal={Human reproduction},
  year={1993},
  volume={8 2},
  pages={211-4}
}
A previously published study reporting the use of a modified swim-up technique for sperm preparation prior to insemination which resulted in a high percentage of male births has been criticized for its lack of controls. The present prospective study was initiated to investigate further the efficacy of modified swim-up preparation for male sex-selection when applied in a properly defined control group. Our results showed that the proportion of males born in singleton pregnancies was… CONTINUE READING

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