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Prevalence of fetal facial cleft at different stages of pregnancy.
Snijders RJ, Sebire NJ, Psara N, Souka A, Nicolaides KH.
Ultrasound Obstet Gynecol 1995;6:327-9. -
Fetal mild hydronephrosis and chromosomal defects: relation to maternal age and gestation.
Snijders RJ, Sebire NJ, Faria M, Patel F, Nicolaides KH.
Fetal Diagn Ther 1995;10:349-55.