Ultrasonography in fetal diagnosis.
D000013:Congenital Abnormalities / Q000175:diagnosis*; D003365:Costs and Cost Analysis; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000191:economics / Q000379:methods* / Q000639:trends; D014465:Ultrasonics / Q000009:adverse effects; D014463:Ultrasonography