Report of the Royal College of Obstetricians and Gynaecologists Study Group on Antenatal Diagnosis of Fetal Abnormalities. London; Royal College of Obstetricians and Gynaecologists, 1991.
2.
ChittyL.S.HuntG.H.MooreJ.LobbM.O.Effectiveness of routine ultrasonography in detecting fetal structural abnormalities in a low risk population. British Medical Journal, 1991, 303, 1165–9.
3.
ShirleyI.M.BottomleyF.RobinsonV.P.Routine radiographer screening for fetal abnormalities by ultrasound in an unselected low risk population. British Journal of Radiology, 1992, 65, 564–9.
4.
LuckC.A.Value of routine ultrasonography scanning at 19 weeks: a four year study of 8849 deliveries. British Medical Journal, 1992, 304, 1474–8.
5.
Saarj-KemppainenA.KarjalainenO.YlostaloP.HeinonenO.P.Ultrasound screening and perinatal mortality: controlled trial of systematic one-stage screening in pregnancy. The Helsinki ultrasound trial. Lancet, 1990, 336, 387–91.
6.
BucherH.C.SchmidtJ.G.Does routine ultrasound scanning improve outcome of pregnancy? Meta-analysis of various outcome measures. British Medical Journal, 1993, 307, 13–7.
7.
EwigmanB.G.CraneJ.P.FrigolettoF.D.LeFevreM.L.BainR.P., McNellis, D. and the RADIUS Study Group. Effect of prenatal ultrasound screening on perinatal outcome. The New England Journal of Medicine, 1993, 329, 821–7.
