1. Impact of introducing a national policy for prenatal Down syndrome screening on the diagnostic invasive procedure rate in England. (9th April 2013) Authors: Morgan, S.; Delbarre, A.; Ward, P. Journal: Ultrasound in obstetrics & gynecology Issue: Volume 41:Number 5(2013:May) Page Start: 526 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗