title: Ultrasonic diagnosis of placental abnormalities in situ.
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D010922:Placenta Diseases / Q000175:diagnosis*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D011263:Pregnancy Trimester, Third; D011272:Pregnancy, Multiple; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography