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British Medical Bulletin|January 1, 1996
Cigarette smoking: an epidemiological overviewN J Wald, A K HackshawPrenatal Diagnosis|September 18, 2001
Assessment of the value of reporting partial screening results in prenatal screening for Down syndromeA K Hackshaw, N J WaldPrenatal Diagnosis|September 18, 2001
Inaccurate estimation of risk in second trimester serum screening for Down syndrome among women who have already had first trimester screeningA K Hackshaw, N J WaldPrenatal Diagnosis|October 8, 1997
Combining ultrasound and biochemistry in first-trimester screening for Down's syndromeN J Wald, A K HackshawPrenatal Diagnosis|February 17, 2001
Repeat testing in antenatal screening for Down syndrome using dimeric inhibin-A in combination with other maternal serum markersA K Hackshaw, N J WaldBailliere'S Best Practice & Research. Clinical Obstetrics & Gynaecology|September 14, 2000
Advances in antenatal screening for Down syndromeN J Wald, A K HackshawPrenatal Diagnosis|December 1, 1995
First trimester serum screening for Down's syndromeN J Wald, A Kennard, A K HackshawPrenatal Diagnosis|December 1, 1995
Repeat maternal serum testing for Down's syndrome screening using multiple markers with special reference to free alpha and free beta-hCGA K Hackshaw, J Densem, N J WaldBMJ (Clinical Research Ed.)|November 20, 1997
The accumulated evidence on lung cancer and environmental tobacco smokeA K Hackshaw, M R Law, N J WaldJournal of Medical Screening|September 26, 2000
Assay precision of serum alpha fetoprotein in antenatal screening for neural tube defects and Down's syndromeN J Wald, A K Hackshaw, L M GeorgePageof 19