Do race-specific definitions of short long bones improve the detection of down syndrome on second-trimester genetic sonograms?
Harper LM, Gray D, Dicke J, Stamilio DM, Macones GA, Odibo AO. Do race-specific definitions of short long bones improve the detection of down syndrome on second-trimester genetic sonograms? J Ultrasound Med. 2010 Feb; 29(2):231-5.