title: What does the patient really have to know about the presence of minor markers on the second-trimester sonogram?
authors.forename: Beryl R
authors.initials: BR
authors.lastname: Benacerraf
mesh_terms: D004314:Down Syndrome / Q000000981:diagnostic imaging*; D005189:False Positive Reactions; D005260:Female; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D016216:Ultrasonography, Prenatal