European Journal of Human Genetics · 2001 · 38 citations · 22 references
MedicineMaternal HealthObstetricsObstetric UltrasoundPrenatal DiagnosisUltrasonographyDown SyndromeFirst-trimester UltrasoundPregnancyPregnancy DiagnosisPrenatal Risk AssessmentPrenatal Diagnosis Of Down SyndromePrenatal Screening MarkersUltrasound Markers For Genetic DisordersUltrasound Risk Markers
22
Kevin Spencer, Vivienne Souter, Natasha Tul et al. · Ultrasound in Obstetrics and Gynecology · 1999 · 571 citations
Ultrasonographically detectable markers of fetal chromosomal abnormalities
K. H. Nicolaides, R. J. M. Snijders, S. Campbell et al. · The Lancet · 1992 · 388 citations
Medicine, Genetics, Obstetrics +14