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Coital Frequency and Twinning

A Comment

Published online by Cambridge University Press:  31 July 2008

W. H. James
W. H. James
Affiliation:
MRC Mammalian Development Unit, University College London
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Abstract

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Type
Debate
Information
Journal of Biosocial Science , Volume 24 , Issue 1 , January 1992 , pp. 135 - 136
Copyright
Copyright © Cambridge University Press 1992

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References

Bønnelykke, B., Olsen, J. & Nielsen, J. (1990) Coital frequency and twinning. J. biosoc. Sci. 22, 191.CrossRefGoogle ScholarPubMed
Cohen, J. (1977) Statistical Power Analysis for the Behavioral Sciences, 2nd edn. Academic Press, New York.Google Scholar
James, W. H. (1981) Variation between couples of human coital rates. J. biosoc. Sci. 13, 151.CrossRefGoogle ScholarPubMed
James, W. H. (1984) Coitus-induced ovulation and its implications for estimates of some reproductive parameters. Acta Genet, med. Gemell. 33, 547.Google ScholarPubMed