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Audit of prenatal diagnosis for haemoglobin disorders in the United Kingdom: The first 20 years.
Modell B, Petrou M, Layton M, Varnavides L, Slater C, Ward R H, Rodeck C, Nicolaides KH, Gibbons S, Fitches A, Old J.
BMJ 1997;315:779-84. -
Ultrasound screening for anencephaly at 10-14 of gestation.
Johnson SP, Sebire NJ, Snijders RJM, Tunkel S, Nicolaides KH.
Ultrasound Obstet Gynecol 1997;9:14-6.