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Human Reproduction, Vol. 16, No. 8, 1777, August 2001
© 2001 European Society of Human Reproduction and Embryology

Letters to the editor

Blood pressure during pregnancy, sex ratio of offspring and reproductive hormone concentrations

William H. James

The Galton Laboratory, University College London, Wolfson House, 4 Stephenson Way London NW1 2HE, UK

Dear Sir,

Kristiansson and Wang report an inverse relation between progesterone concentrations at 8–10 weeks of pregnancy in the 2nd and 3rd trimesters of pregnancy . . . [Full Text of this Article]

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