%0 Journal Article
%T Adjusting the Risk for Trisomy 21 on the Basis of Second-Trimester Ultrasonography:
%J Journal of Diagnostic Medical Sonography
%V 11
%N 5
%P 271-272
%@ 8756-4793
%D 2016-07-01
%I J.B. Lippincott CompanyPhiladelphia
%~ DeepDyve