DOI: 10.1055/s-00000020

Geburtshilfe und Frauenheilkunde

References

Wilcox AJ, Weinberg CR, Baird DD.
Timing of sexual intercourse in relation to ovulation. Effects on the probability of conception, survival of the pregnancy, and sex of the baby. 
N Engl J Med 1995; 333: 1517-1521  

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