Apical four-chamber ultrasonography as screen for congenital heart disease.
Silverman
N H
NH
D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D006330:Heart Defects, Congenital / Q000517:prevention & control*; D006801:Humans; D008403:Mass Screening / Q000379:methods; D011247:Pregnancy; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods*