title: Prenatal ultrasonic detection of congenital heart block.
mesh_terms: D000293:Adolescent; D000818:Animals; D001919:Bradycardia / Q000151:congenital / Q000175:diagnosis / Q000209:etiology; D002417:Cattle; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006327:Heart Block / Q000150:complications / Q000151:congenital / Q000175:diagnosis*; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*; D014463:Ultrasonography