progesterone fall estradiol rise before labor onset, Turnbull progesterone withdrawal labor initiation human, peripheral plasma progesterone estradiol parturition, hormonal changes preceding spontaneous labor onset, progesterone decline estrogen rise mechanism of labor, estradiol to progesterone ratio labor trigger, endocrine signals onset human parturition, Flint Keirse Anderson progesterone estradiol labor, steroid hormone changes third trimester labor prediction, progesterone withdrawal hypothesis human parturition
PMID 4130306 4130306 DOI 10.1016/s0140-6736(74)92337-x 10.1016/s0140-6736(74)92337-x
Cite this article
Turnbull, A. C., Patten, P. T., Flint, A. P., Keirse, M. J. N. C., Jeremy, J. Y., & Anderson, A. B. (1974). Significant fall in progesterone and rise in oestradiol levels in human peripheral plasma before onset of labour. *Lancet (London, England)*, *1*(7848), 101-103. https://doi.org/10.1016/s0140-6736(74)92337-x
Turnbull AC, Patten PT, Flint AP, Keirse MJNC, Jeremy JY, Anderson AB. Significant fall in progesterone and rise in oestradiol levels in human peripheral plasma before onset of labour. Lancet. 1974;1(7848):101-103. doi:10.1016/s0140-6736(74)92337-x
Turnbull, Alan C., et al. "Significant fall in progesterone and rise in oestradiol levels in human peripheral plasma before onset of labour." *Lancet (London, England)*, vol. 1, no. 7848, 1974, pp. 101-103.
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