First trimester contingency screening for down syndrome using nasal bone assessmentTerrence Hallahan; Francesco Orlandi; Rossi Cinzia; Emanuella Orlandi; Maria Cristina Jakil; Vincent Macri; David Krantz · 2005

First-trimester stepwise sequential prenatal screening for Down syndrome using NT and maternal agePierre Miron · 2011

OC38.01: Screening for Down syndrome using first-trimester combined screening followed by second-trimester ultrasound examination: evaluation of the complianceY. Ville; P. Rozenberg; L. Bussières; J. P. Bernard · 2005

P01.02: Screening for Down syndrome using first-trimester combined screening followed by second-trimester detailed ultrasound examination: an economic evaluationY. Ville; P. Rozenberg; I. Durand-Zaleski; L. Bussières · 2005

Are Second-Trimester Minor Sonographic Markers for Down Syndrome Useful in Patients Who Have Undergone First-Trimester Combined Screening?Endo, Yoshimi · Ultrasound Quarterly · 2011

Maternal Homocysteine Level and Markers Used in First-Trimester Screening for Fetal Down SyndromeCheng, P.-J.; Huang, S.-Y.; Shaw, S.-W.; Chueh, H.-Y.; Hsieh, T.-T. · Reproductive Sciences · 2010

Community-based screening for Down syndrome in the first trimester using ultrasound and maternal serum biochemistryWJA Gyselaers; AJ Vereecken; JG Nijhuis · 2006

First trimester screening for trisomy 21: Do the parameters used detect more pathologies than just Down syndrome?Genc Kabili; Reto Stricker; René Stricker; Philippe Extermann; Paul Bischof · 2004

CT ratios: parameter estimates are inconsistent with SURUSS publications?Dave Wright; Ian Bradbury; Peter Benn; Barry Nix; Kevin Spencer; Howard Cuckle · 2006