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Lancet (London, England)|November 22, 1975
Levels of alpha-fetoprotein in maternal blood as a screening test for fetal neural-tube defectP C Leighton, M J Kitau, T Chard, et al.
Human Reproduction (Oxford, England)|June 1, 1996
Mechanism of action of the intrauterine contraceptive device: evidence for a specific biochemical deficiency in the endometriumS Seleem, F A Hills, H T Salem, et al.
Human Reproduction (Oxford, England)|April 1, 1990
Serum PP14 levels in a patient with Turner's syndrome pregnant after frozen embryo transferH O Critchley, T Chard, B A Lieberman, et al.
Acta Obstetricia Et Gynecologica Scandinavica|January 1, 1981
Pregnancy specific beta 1 glycoprotein and chorionic gonadotrophin in early human pregnancyE A Lenton, J G Grudzinskas, Y B Gordon, et al.
British Journal of Obstetrics and Gynaecology|September 1, 1991
Early amniocentesis: alphafetoprotein levels in amniotic fluid, extraembryonic coelomic fluid and maternal serum between 8 and 13 weeksN C Wathen, P L Cass, D J Campbell, et al.
British Journal of Obstetrics and Gynaecology|February 1, 1981
Improved diagnosis of pregnancy-related gynaecological emergencies by rapid human chorionic gonadotrophin beta-subunit assayM Seppälä, T Ranta, E M Rutanen, et al.
British Journal of Obstetrics and Gynaecology|April 1, 1980
Adrenal-seminal-pituitary protein levels in maternal serum and amniotic fluidR J Etheridge, M A Al-Awqati, J G Grudzinskas, et al.
Human Reproduction (Oxford, England)|December 1, 1996
Inhibin in extra-embryonic coelomic and amniotic fluids and maternal serum in early pregnancyS C Riley, N C Wathen, T Chard, et al.
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