Objective: Studies that mostly were conducted before the widespread use of combination antiretroviral treatments have reported that antenatal invasive procedures markedly increase the risk of human immunodeficiency vi...
OBJECTIVE: Assessing the role of fetal ductus venosus and nasal bones evalua ti on in first-trimester screening for Down syndrome. METHODS: This was a prospect ive cohort study in a tertiary referral fetal medicine un...