Frontiers | The best tool for the assessment of developmental disorders in children with down syndrome: comparison of standard and specialized growth charts - cross sectional study
2nd Trimester softmarkers and risk calculation for Trisomy 21 | Paras
2nd Trimester softmarkers and risk calculation for Trisomy 21 | Paras
Screening for trisomy 21 by maternal age, fetal nuchal translucency thickness, free beta‐human chorionic gonadotropin and pregnancy‐associated plasma protein‐A - Kagan - 2008 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library