title: Letter: Intrauterine diagnosis and ultrasound.
mesh_terms: D000653:Amniotic Fluid / Q000166:cytology*; D002478:Cells, Cultured; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014465:Ultrasonics / Q000009:adverse effects; D014463:Ultrasonography