title: The safety of Doppler ultrasound.
authors.forename: R D
authors.initials: RD
authors.lastname: Waxham
mesh_terms: D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012449:Safety; D014465:Ultrasonics; D014463:Ultrasonography